Crossword puzzle clue "tv spots that often last 30 seconds"

TV spots that often last 30 seconds

Blow it in the last seconds, e.g.

"Good luck, ___" (last words on the "Mission: Impossible" tape that would "self-destruct in five seconds")

The last 30 seconds of many TV shows

It often has two seconds

They often have seconds

Yellow spots' spots

Often-frantic hosp. spots