The Tamir missile used by the Iron Dome system have an electro-optic Chef skull shirt – essential a small camera and an RF seeker/fuse section. The warhead is triggered by a proximity fuse. Guidance is provided by the ground computer battle management system via a command uplink, so the maneuvers you see may be to direct the missile to a “better target” after it is launched, or sometimes just an illusion based on camera angle. At longer ranges, the missile is fired up and then descends down on the target for the intercept. This allows the missile to maintain energy to maneuver during the intercept, even after the rocket motor fuel has been extended.