5) Troubleshoots, repairs, overhauls, modifies and operates aerospace ground equipment such as AC and DC power generators, various types of internal combustion engines, air compressors, blowers, hydraulic test stands, cabin leakage testers, portable diesel engine driven generators, emergency lighting units, de-icers, heaters, load banks, hydrostatic testers, cryogenic carts, decontamination units, thermal bath, vacuum pumps, flow meters, lavatory service trailers, air conditioners and various pieces of non-powered AGE. Security Clearance/Background Check requirements: In order to comply with US DOD requirements and ensure the safety and security of the missions, programs, property and personnel of the Nebraska Military Department, employees must obtain the appropriate background investigation and maintain the level of security clearance assigned to their respective work.