The US-made F-35 stealth fighter has seen its first ever combat action, flying in an operation for the Israeli air force.
The air force chief showed an image of jets over Beirut, Lebanon, and said the planes had “already attacked twice on two different fronts”.
Israel recently carried out scores of air strikes in Syria.
The F-35, from the world’s priciest military programme, has been criticised both for cost and combat effectiveness.
Last year, Defence Secretary James Mattis had to defend the programme after then President-elect Donald Trump tweeted criticising its huge price, said to be close to $100m (£74m) per plane.