well the lighting dude did it twice, so some yelling is in order i think; but mostly i think WHATEVER, since this movie will most likely suck.
ah btw, it wasn't a lighting guy, it was the director of photography
from wikipedia:
"In July 2008, it was reported that Bale had an angry tirade on the set of Terminator: Salvation. In February 2009, audio of the incident was released.[51] The tirade was directed at Shane Hurlbut, director of photography, for Terminator: Salvation and was triggered by Hurlbut stepping onto the set during filming.[52][53] The recording is of a highly agitated Bale screaming profanities at Hurlbut, threatening him, and finally threatening to quit the film if Hurlbut walked on set again and was not fired. It was reported that Warner film executives sent the tape to the insurer of the film in case Bale decided to quit the movie."