Why would an investigator MOST likely use an ion mobility spectrometer (IMS)? A)to determine the point of origin
B)to sniff out flammable liquids
C)to test for explosive materials
D)to analyze the weight of hydrocarbons

The texas department of public safety issues driver's licenses and identification cards that have specific security features. a valid driver's license issued after april 2009 has which of the following features on the front of the card?