DHS runs the Federal Law Enforcement Training Center, for 89 US government agencies, and some state, local, tribal, campus, and international agencies.

http://www.gao.gov/special.pubs/gao-..._training.html

DHS course length for Uniformed Police is 14 weeks. Air Marshal = 13 weeks. Basic firearms training = 6 weeks.

No way the agency is going to invest this amount of $$ for training folks recruited via pizza boxes with swiss cheese holes in their background checks.