The F-35, aircraft AA-1, exceed Mach 1 on a flight yesterday.

Specifically, it hit Mach 1.05 for 8 minutes carrying 2 AMRAAMS and 2 JDAMS, which is the first for the program, unless you count the demonstration flight in 2001 for the STOVL demonstrator.

Still, given that AA-1 rolled out in 2006, one has to wonder what took so bloody long.