Changing MOS

[mminsc]

Sorry for the interruption, but I have a question...actually, a question for our son (I know, I know...he should be/will be finding out this information on his own, but we just want to be a little educated). Can an MOS be changed? Our son is 8 weeks into boot camp and has learned more about "logistics"--a bit different than what he expected.

Thanks for any input.