Err... a few here and there, actually. Indeed, just this past weekend, we performed a somewhat subtle smash and grab. No one got killed or even injured, even among those we smashed. Unfortunately, it was not a Traveller game we were playing...
We used up about 3 hours of real-time for planning the hit, distilling it down to 4 operations, and each of those went down smoothly, with almost no deviation from our plan, taking about 5-10 minutes apiece, without so much as a gun being fired by either side.
Basically, the setup was that we were hired to break into what amounted to a bank, steal something, and get out. Phase 1 of the operation was observation for 5 days, and we got information about key personnel guarding the place. Second step was to abduct the family of one of the key persons, giving him instructions that on the next day, when trouble started, he was to go down easy, and no one would be the wiser against him. The third step was to perform the operation, and we hit the area where our man was with a gas bomb to give him an excuse to go down easy and came in from a different, unprotected route. With gas grenades deployed and stun guns at the ready, we grabbed what we came for and were gone within 5 minutes of tossing teh first gas grenade. And the fourth step was to return his family unharmed and without anyone knowing they had been abducted, and to claim our fee from those who wanted the hit done in the first place.
In a game where the body counts are usually pretty high, we did something rather extraordinary by not even injuring anyone in a well-protected compound, and left virtually no traces for anyone to find us with. The whole thing took about 5 hours of realtime, from assignment to payoff. The GM had the building and all the important information already ready to go, and we had access to most of it due to a man on the inside working for the guy who hired us. It was very exciting to go through all these plans and decide which course of action to take, from start to finish, and to have a couple back up plans ready to go. We did have to improvise a couple times, but overall, it went without a hitch, and all in a single day of realtime.