The hero of the piece is Jeff Dugan (Michael Brandon), an idealistic program director who pushes Q-SKY to the top of the L.A. market. His success draws the attention of Regis Lamar (Tom Tarpey), an ambitious salesman with Q-SKY’s parent company. When Lamar insists that Dugan run ads for the Army, Dugan quits, so his cronies show solidarity by staging the aforementioned occupation. Ezra Sacks’ screenplay never takes flight, wasting the considerable potential of the premise, and the film gets bogged down in unnecessary discursions, like a long sequence of narcissistic DJ Eric Swan (Martin Mull) melting down on the air. Casting is another problem, because while Brandon is smooth, he doesn’t have the star quality needed to play a charismatic ringleader, and supporting players including Eileen Brennan, Alex Karras, James Keach, and Cleavon Little are underused. However, FM gets points for atmosphere. Watching the physical operation of an old-school radio station is fascinating, and the cast features several real-life rock-music personalities. FYI, FM was the only theatrical feature directed by the great cinematographer John A. Alonzo, so the movie looks slick—although Alonzo’s gifts clearly didn’t extend to dramaturgy.