Sonic BOOM in Los Angeles. Did anyone hear it?

Question

Today, March 7, 2008 around 4:30 in the morning, three loud explosion-like noises rattled my house and set car alarms off in my street. Did anyone else hear three loud Sonic Booms? if so, what caused them? I have heard nothing about it on the news or anything. I heard the booms in south eastern LA.

Answer 1

Another UFO thing? did not hear it!