Greenlight - S1-E16
Factual error: Captain Anderson pulls a suspect underwater and shoots him. There's a bright, yellow flash under the water. In reality, this wouldn't happen, only a large amount of bubbles would appear, but no flash.
Factual error: During the LAPD gun exchange program, an explosion happens from (according to the show) claymore mines being in the trunk of a car. In reality, this wouldn't happen as Claymore Mines are very stable and safe. The explosive used, C-4, is shock stable and temperature stable. The mine will only go off when used with a detonator.
Answer: This hardly seem to be an automatic center punch. Standard tool for technical rescue from car accidents.