An F-35A Lightning II takes off to complete the final test exercise of the nuclear design certification process at Nellis Air Force Base, Nev., Sept. 21, 2021. Test pilots flew to the Tonopah Test Range at Nellis AFB and released two B61-12 Joint Test Assemblies from operationally realistic flight envelopes. (U.S. Air Force photo by Airman 1st Class Zachary Rufus) nellisafb #f35 #f35a #airforce #usaf #airmen #airman #pilot #pilots