The use of laser technology is not as simple as it sounds; it has proved very ________ to use satellites to position equipment in space that can destroy the ________ controls of enemy aircraft.

The first part of the sentence gives the clue for the first blank, which implies that laser technology has proved to be difficult. Therefore, we are left with 2 options: (1) and (2). 'Steering' means to direct the course of, whereas 'random' is haphazard movement, thus steering controls gives sense to the sentence. Hence, (2) is the answer.