I do indeed recall 'LOPRO' exercises with disposable Canberras in my Vulcan days. But to brighten up the excrutiating boredom of MRR, we also did the odd 'SELPRO' event - one on occasion blundering across a number of HM's war canoes being shadowed by some Russian ships! RWR audio was quite impressive - as were the instructions from the maritime controller inviting us to....Foxtrot Oscar!!