The U.S. Army has a couple positions opening at Ft.Eustis, VA and Letterkenny AD, PA. They should show up soon on www.usajobs.gov.
SCER11455405 / SCER11455405D
Precision Measurement Equipment Calibrator closes: 17-Nov-2011 TSC - FORT EUSTIS WG-3378 11
NEAB11468641 / NEAB11468641D
Precision Measurement Equipment Calibrator closes: 25-Nov-2011 TSC - LETTERKENNY WG-3378 11
Pays not the best but benefits are good (especially for vets). Also lots of promotion potential if you're willing to move around. Good positions to get started in the government system.
Note: if you're interested make sure your resume has the key words from the announcement or you won't get past the computer screening.
For some reason, usajobs is still having problems with job series 3378. It looks like these positions ended up being posted under the old 2602 job series.