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Spc Kristopher Fernando, a medic assigned to the 602nd Area Support Medical Company located at Fort Bragg, N.C., evaluates a medical mannequin after it has gone through chemical decontamination procedures April 29, 2017, as part of Guardian Response at Muscatatuck Urban Training Center, Ind. Exercise Guardian Response is a multi-component training exercise run by the U.S. Army Reserve designed to validate more than 4,000 service members in Defense Support of Civil Authorities in the event of a Chemical, Biological, Radiological and Nuclear catastrophe. This year's exercise simulated an improvised nuclear device explosion with a source region electromagnetic pulse out to more than four miles. The 84th Training Command hosted the exercise, and the 78th Training Division, headquartered in Joint Base McGuire-Dix-Lakehurst, New Jersey, conducted the training. (U.S. Army Reserve Photo by Staff Sgt. Brad Ruffin, 206th Broadcast Operations Detachment)

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Soldiers from the 51st Chemical Company 83rd Battalion stationed in Fort Stewart, Ga., decontaminate a battle mannequin during a simulated improvised nuclear device explosion April 29, 2017, as part of Guardian Response at Muscatatuck Urban Training Center, Ind. Exercise Guardian Response is a multi-component training exercise run by the U.S. Army Reserve designed to validate more than 4,000 service members in Defense Support of Civil Authorities in the event of a Chemical, Biological, Radiological and Nuclear catastrophe. This year's exercise simulated an improvised nuclear device explosion with a source region electromagnetic pulse out to more than four miles. The 84th Training Command hosted the exercise, and the 78th Training Division, headquartered in Joint Base McGuire-Dix-Lakehurst, New Jersey, conducted the training. (U.S. Army Reserve Photo by Staff Sgt. Brad Ruffin, 206th Broadcast Operations Detachment)

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Spc. Megan Rowley and Spc. Kristopher Fernando medics assigned to the 602nd Area Support Medical Company located at Fort Bragg, N.C., wait for a simulated victim to complete the decontamination process for medical assessment April 29, 2017, as a part of Guardian Response at Muscatatuck Urban Training Center, Ind. Exercise Guardian Response is a multi-component training exercise run by the U.S. Army Reserve designed to validate more than 4,000 service members in Defense Support of Civil Authorities in the event of a Chemical, Biological, Radiological and Nuclear catastrophe. This year's exercise simulated an improvised nuclear device explosion with a source region electromagnetic pulse out to more than four miles. The 84th Training Command hosted the exercise, and the 78th Training Division, headquartered in Joint Base McGuire-Dix-Lakehurst, New Jersey, conducted the training. (U.S. Army Reserve Photo by Staff Sgt. Brad Ruffin, 206th Broadcast Operations Detachment)

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During a specialized form of rescue, Soldiers of the 468th Fire Fighting Detachment engage in one of the most dangerous rescue operations to complete during Guardian Response 17 at Muscatatuck Urban Training Center, Indiana on May 7, 2017.

Nearly 5,000 Soldiers and Airmen from across the country are participating in Guardian Response 17, a multi-component training exercise to validate the military's ability to support Civil Authorities in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe. (U.S. Army Reserve photo by Staff Sgt. Christopher Sofia/Released)

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A crew of 468th Fire Fighting Detachment Soldiers shore up the side of a trench in order to extract a mannequin casualty safely during Guardian Response 17 at Muscatatuck Urban Training Center, Indiana on May 7, 2017.

Nearly 5,000 Soldiers and Airmen from across the country are participating in Guardian Response 17, a multi-component training exercise to validate the military's ability to support Civil Authorities in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe. (U.S. Army Reserve photo by Staff Sgt. Christopher Sofia/Released)

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During a specialized form of rescue, Soldiers of the 468th Fire Fighting Detachment engage in one of the most dangerous rescue operations to complete during Guardian Response 17 at Muscatatuck Urban Training Center, Indiana on May 7, 2017.

Nearly 5,000 Soldiers and Airmen from across the country are participating in Guardian Response 17, a multi-component training exercise to validate the military's ability to support Civil Authorities in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe. (U.S. Army Reserve photo by Staff Sgt. Christopher Sofia/Released)

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During a specialized form of rescue, Soldiers of the 468th Fire Fighting Detachment engage in one of the most dangerous rescue operations to complete during Guardian Response 17 at Muscatatuck Urban Training Center, Indiana on May 7, 2017.

Nearly 5,000 Soldiers and Airmen from across the country are participating in Guardian Response 17, a multi-component training exercise to validate the military's ability to support Civil Authorities in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe. (U.S. Army Reserve photo by Staff Sgt. Christopher Sofia/Released)

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An Army Reserve Soldier from the 468th Fire Fighting Detachment ensures the side walls are braced properly down inside a trench in order to rescue and extract a mannequin during Guardian Response 17 at Muscatatuck Urban Training Center, Indiana on May 7, 2017.

Nearly 5,000 Soldiers and Airmen from across the country are participating in Guardian Response 17, a multi-component training exercise to validate the military's ability to support Civil Authorities in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe. (U.S. Army Reserve photo by Staff Sgt. Christopher Sofia/Released)

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During a specialized form of rescue, Soldiers of the 468th Fire Fighting Detachment engage in one of the most dangerous rescue operations to complete during Guardian Response 17 at Muscatatuck Urban Training Center, Indiana on May 7, 2017.

Nearly 5,000 Soldiers and Airmen from across the country are participating in Guardian Response 17, a multi-component training exercise to validate the military's ability to support Civil Authorities in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe. (U.S. Army Reserve photo by Staff Sgt. Christopher Sofia/Released)

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A mannequin lies at the bottom of a trench awaiting rescue during Guardian Response 17 at Muscatatuck Urban Training Center, Indiana on May 7, 2017.

Nearly 5,000 Soldiers and Airmen from across the country are participating in Guardian Response 17, a multi-component training exercise to validate the military's ability to support Civil Authorities in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe. (U.S. Army Reserve photo by Staff Sgt. Christopher Sofia/Released)

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A U.S. Army Reserve firefighter with the 468th Engineer Detachment, Danvers, Massachusetts, carries a casualty to safety after being rescued from a train derailment exercise, part of Guardian Response 17 at Muscatatuck Urban Training Center, Butlerville, Indiana, May 7, 2017.
Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units’ ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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U.S. Army Reserve firefighters with the 468th Engineer Detachment, Danvers, Massachusetts, assess the situation at a train derailment exercise, part of Guardian Response 17 at Muscatatuck Urban Training Center, Butlerville, Indiana, May 7, 2017.
Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units’ ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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U.S. Army Reserve firefighters with the 468th Engineer Detachment, Danvers, Massachusetts, prepare to descend into a train during a derailment exercise, part of Guardian Response 17 at Muscatatuck Urban Training Center, Butlerville, Indiana, May 7, 2017.
Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units’ ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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U.S. Army Reserve firefighters with the 468th Engineer Detachment, Danvers, Massachusetts, prepare to descend into a train during a derailment exercise, part of Guardian Response 17 at Muscatatuck Urban Training Center, Butlerville, Indiana, May 7, 2017.
Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units’ ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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U.S. Army Reserve firefighters with the 468th Engineer Detachment, Danvers, Massachusetts, carry a casualty from the wreckage of a train derailment exercise, part of Guardian Response 17 at Muscatatuck Urban Training Center, Butlerville, Indiana, May 7, 2017.
Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units’ ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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A mannequin victim awaiting rescue is pinned underneath a vehicle May 6, 2017, at Muscatatuck Urban Training Center, Indiana, during Guardian Response 17. Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units' ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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U.S. Army Reserve Soldiers from the 468th Engineer Detachment in Danvers, Massachusetts, go through proper decontamination methods and exiting a simulated contaminated environment on May 6, 2017 at Muscatatuck Urban Training Center, Indiana. Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units' ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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U.S. Army Reserve Soldiers prepare to extract a mannequin victim from underneath a vehicle May 6, 2017 at Muscatatuck Urban Training Center, Indiana. Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units' ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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United States Army Reserve Soldiers from Danvers, Massachusetts, based 468th Engineer Detachment treat a mannequin victim extracted from underneath a vehicle May 6, 2017 at Muscatatuck Urban Training Center, Indiana. Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units' ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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A U.S. Army Reserve Soldier secures the gurney straps on a mannequin victim extracted from underneath a vehicle May 6, 2017 at Muscatatuck Urban Training Center, Indiana. Nearly 4,100 Soldiers from across the country are participating in Guardian Response 17, a multi-component training exercise to validate U.S. Army units' ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological, and Nuclear (CBRN) catastrophe.

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