...and...now that there is a shortage of tech's to work on aircraft, wouldn't that also mean there is a shortage of trained tech's all over the place, including the ones needed to teach the courses to the new tech's that are coming thru the training pipe? According to the info on the ISS Det Borden website, Occupation Status 07/08, of the 24ish Air Force MOCs, all ranks, only 6 of them are Green WRT PML. Ouch. For the 'reddest' trades, you are looking at AF Engr and ANAV for Officer and AES Op, EGS Tech and Flt Engr for NCM. I won't post the actual numbers WRT to PMLs, but you can find it if you have DWAN access at the ISS Det Borden link below. (Under the General heading, the 2nd last link, Occupation Status Matrix)
http://borden.mil.ca/cfrg/english/iss_s/iss_s_e.asp