F-35Bs are now embarked on both of the U.K.’s new aircraft carriers for the first time in a historic moment for the Royal Navy. The debut of the F-35B aboard HMS Prince of Wales is a big step towards a two-strike carrier Navy for our partner the U.K. The aircraft and ship are carrying out Sea Acceptance Trials which test the ship’s ability to not only receive and launch the F-35B but also maintain near-continuous air operations. (Read more about the U.K.'s milestone.)