U.S. Air Force Tech. Sgt. Samantha Brewer, 489th Maintenance Squadron aircraft electrical and environmental systems specialist, holds a mason jar under the integrated drive generator of a B-1B Lancer at Dyess Air Force Base, Nov. 19, 2016. The samples are used to test the oil for contaminants. (U.S. Air Force photo by Senior Airman Kedesha Pennant)