alarm clock - n. a clock that can be set to sound an alarm at any desired time
garage - n. a building or part of a building in which a car, truck, etc., is kept
mission – n. a flight by an aircraft or spacecraft to perform a specific task
orbit - v. to travel around (something, such as a planet or moon) in a curved path : to make an orbit around (something)
classified - adj. kept secret from all but a few people in the government