Staff Sgt. Christopher Kurban, 779th Aerospace Medicine Squadron bioenvironmental engineer, helps Airman 1st Class Bridgette Brzenzinski, 779th AMDS bioenvironmental engineering apprentice, put on her level A protection before a simulated exercise of clearing a vehicle of radiation Jan. 23, 2013 on Joint Base Andrews, Md. The level A protection consists of a self contained breathing apparatus, respirator and pack and a level A, fully encapsulating Tychem chemical protective suit. (U.S. Air Force photo/ Airman 1st Class Erin O’Shea)

Airman 1st Class Jeremy Karcher, a bioenvironmental engineering technician from the 779th Aerospace Medicine Squadron, removes his respirator after a simulated vehicle clearing exercise Jan. 23, 2013 on Joint Base Andrews, Md. Bioenvironmental Engineers wear full protective gear during their exercises when checking for radiation. (U.S. Air Force photo/ Airman 1st Class Erin O’Shea)

Airman 1st Class Peter Cambra, 779th Aerospace Medicine Squadron bioenvironmental engineer technician, places an air sampler on Tech. Sgt. John Mills-Hearne, a painter with the 459th Reserve Air Refueling Wing Jan. 23, 2013 on Joint Base Andrews, Md. Bioenvironmental Engineers are required to sample air on location to help monitor the amount of chemicals workers are exposed to. (U.S Air Force photo/ Airman 1st Class Erin O’Shea)

Tech. Sgt. John Mills-Hearne, a painter with the 459th Reserve Air Refueling Wing, has his protective mask straps adjusted before being exposed to a chemically filled room Jan. 23, 2013 at Joint Base Andrews, Md. Bioenvironmental engineers are required to sample air on location to help monitor the amount of chemicals workers are exposed to. (U.S Air Force photo/ Airman 1st Class Erin O’Shea)

Tech. Sgt. John Mills-Hearne, a painter with the 459th Reserve Air Refueling Wing, is observed by Airman Thomas McMahon, 779th Aerospace Medicine Squadron bioenvironmental engineering technician, as he demonstrates the proper painting techniques on an aircraft Jan. 23, 2013 at Joint Base Andrews, Md. Bioenvironmental engineers are required to sample on location to help monitor the amount of chemicals workers are exposed to. (U.S Air Force photo/ Airman 1st Class Erin O’Shea)

Airman 1st Class Alexandra Aloba, 779th Aerospace Medicine Squadron bioenvironmental engineering technician, fills up a vile to monitor the amount of chlorine in a water sample Jan. 23, 2013 at Joint Base Andrews, Md. Bioenvironmental engineers are required to visit specific locations for testing once a month. (U.S. Air Force photo/ Airman 1st Class Erin O’Shea)

Senior Airman Alex Ribbens, a bioenvironmental engineer from the 779th Aerospace Medicine Squadron, examines the readings of a Wet Bulb Globe Temperature Index Jan. 23, 2013 on Joint Base Andrews, Md. The monitor is used to notify the base of heat flag conditions and measurement is required of those environmental factors that most nearly correlate with deep body temperature and other physiological responses to heat. (U.S Air Force photo/Airman 1st Class Erin O’Shea)