Moment From Transformers: Dark of the Moon

Optimus Kills Sentinel
Optimus executes his treacherous mentor, Sentinel Prime. This is for Ironhide.
Sam Witwicky takes his first tenuous steps into adulthood while remaining a reluctant human ally of Autobot-leader Optimus Prime. The film centers around the space race between the USSR and the USA, suggesting there was a hidden Transformers role in it all that remains one of the planet's most dangerous secrets.
Tags: moon, spacecraft, traitor, bodyguard, alien planet, based on cartoon, transformers, giant robot, sabotage, word domination, commando, duringcreditsstinger