In a new milestone for the troubled F-35 Lightning II programme, the U.S. Air Force has received its 100th F-35. The aircraft, designated AF-100, touched down at Luke Air Force Base, Arizona, on 26th August.

Luke AFB received its first F-35 in March 2014 and developed the training and tactics for the programme. The fleet has since grown to more than 40 F-35s at the base, including those of partner nations such as Australia and Norway. The base also recently activated the third of six F-35 training units -- the 63rd Fighter Squadron.