The Captain had informed all the teams under his command last week so we all knew we would be picking up some of the slack during this period. We had ...een dropped in an old LZ and used the map coordinates to move to where they wanted watched. We had found a small rise that was dry where we could be far enough away to watch and still stay dry.The first day was pretty quiet and other than a few small patrols the connecting roads below our position seemed quiet. That night we set up our usual. Neither my wife nor myself were particularly keen at the time, but as the weeks passed, the thought of watching my wife being shagged by another bloke increased my sex drive no end and it became a bit of a game. I would pretend that I was a plumber come to fix the washing machine and we would then end up shagging on it, or we'd pretend I was a carpenter coming to give her a quote for some new wardrobes etc…We started talking again about another man joining us for real and decided that we were. His mouth went to my pussy… which wasdrenched at this point. I had a mini orgasm as he sucked gently onmy clit. While I appreciate good oral sex, it was his cock I wanted. Idrew him up to me and kissed him… tasting my juice on his tongue. Itook his hard cock and slid his shaft into me. I spread my legs wideand grabbed us tight little butt. His first few strokes in me were gentlebut he then started to pick up pace… his cock going deep into mywell lubricated pussy like a piston. Wave after wave. Knowing the bed was right behind me, I leaned back and sat down. I looked up at here and said "now what, our husbands are right out the door and here we are". she smiled and said "I don't know, but I want to do something".I pushed myself back up to the pillows and she sat on the end of the bed. Here hands were exploring her own legs, and mine were rubbing my stomach. We both smiled, I closed my eyes and went for it. I opened my legs and started to rub myself. She did the same and there we.