Can you describe briefly two applications of mass spectrometry in forensic analysis?

[Pher]

I got a crap load of HW (Not due to procrastination just been busy) and im really not feeling answering this last junior Hnrs Chemistry question for extra credit so if someone could answer this who knows for sure that would be awsome and you'll get a best answer ty. If your wrong......ill burn your house down ( quoted from Semi Pro)