Aircraft oil is analyzed at Joint Base Langley-Eustis, Va., Dec. 5, 2016. The oil is analyzed using an optical emission spectrometer, which analyzes the burning aircraft oil by the intensity of light and colors emitted. (U.S. Air Force photo by Senior Airman Kimberly Nagle)

Aircraft oil sits inside of an optical emission spectrometer at Joint Base Langley-Eustis, Va., Dec. 5, 2016. The equipment tests for metal fragments, ensuring the Nondestructive Inspection individuals can locate discrepancies with the oil. (U.S. Air Force photo by Senior Airman Kimberly Nagle)

U.S Air Force Senior Airman Rickey Godette, 1st Maintenance Squadron Nondestructive Inspection journeyman, reviews film at Joint Base Langley-Eustis, Va., Dec. 5, 2016. The X-ray image is used to look for foreign object debris that could be inside of the aircraft. (U.S. Air Force photo by Senior Airman Kimberly Nagle)

U.S Air Force Senior Airman Rickey Godette, 1st Maintenance Squadron Nondestructive Inspection journeyman, holds an X-ray image over a concentrated light at Joint Base Langley-Eustis, Va., Dec. 5, 2016. The concentrated light enables the NDI inspectors to see more details in the image. (U.S. Air Force photo by Senior Airman Kimberly Nagle)

U.S Air Force Senior Airman Rickey Godette, 1st Maintenance Squadron Nondestructive Inspection journeyman, prepares aircraft oil to be analyzed at Joint Base Langley-Eustis, Va., Dec. 5, 2016. NDI individuals use this test as a way to track any discrepancies within the oil. (U.S. Air Force photo by Senior Airman Kimberly Nagle)

U.S. Air Force Airman 1st Class Shay Oakley, 1st Maintenance Squadron Nondestructive Inspection journeyman, inspects a piece of an aircraft at Joint Base Langley-Eustis, Va., Dec. 5, 2016. After applying a fluorescent penetrant, NDI specialists are able to identify indiscretions on an aircraft part using a black light. (U.S. Air Force photo by Senior Airman Kimberly Nagle)