When he spoke publicly about things, he was lucid and coherent. Not a shadow of any sign of problem. In fact he seemed to be enjoying himself. Maybe a good actor or good at covering up? we'll never know.
However at the end of the day I wouldnt want him back beside me. Whatever the cause, he is flakey cannot be relied on when things heat up.
Thinking about him , I found it very interesting in the past "people watching" in the time leading up to the first gulf war . Groups of service people who'd joined up to play footie, visit sunny places and get pissed realised they really would have to think about pointing that nasty bang stick at someone and conflict was messy.
Its a tough world but we were all volunteers :naughty