Can you hear me OK? <a href=" http://www.potawatomiheritage.org/do-prescription-drugs-have-to-be-fda-approved.pdf ">is it illegal to take prescription drugs on a plane</a> BILLINGS — A former Montana high school teacher registered as a sex offender and checked in with his probation officer during his first day of freedom after completing a 30-day sentence for raping a 14-year-old girl.