My mate's a bit bored and has been getting fit. Runs 5k so he's not a complete washout. Years back he was Merchant Marine and RNR. Doesn't fancy going back to that but wondered about the TA. He's a drilling engineer by trade - offshore work. He's 42. Degrees in geology and so on. When I said he would be able to get in he said - What unit would he be best suited to?