A placement is definately possible.
http://defenceintranet.diiweb.r.mil....15/0/02077.pdf
That intranet link will give you the relevant PI on work placements. Take note of the requirements of para 9 and 9a. Suggest you ask the Uni to start official contact with the Civillian Development Worker (it's usually their job to organise these things assuming the Stn you want has one) on the unit you want a placement at to progress things a bit further.