What was the reason for the labor shortage over the weekend? Was it the logistics of flying commuting flight crews to their bases, were the bases snowed in and nothing was moving including ground crew? It's really weird how airplanes seem to break on a holiday. I remember once I was on call on Christmas Day for the one who shall not be named and a LR35 came in for basically a quick turn and a crew change and the new crew decided the transfer pumps weren't working so they couldn't fuel it up, grounded the airplane and went home. I got there about 40 minutes later and found out that they were full of •, the airplane was fine. The captain that wrote it up was fired the following business day. Another lovely X-Mas morning involved a hawker 800 with an apparent dead battery, I think they thought if they called for MX they'd be released to go home, when I got down to the ramp in about a half hour and both batteries came online they both claimed to be idiots and started discussing the gloves they were wearing, I wasn't wearing gloves, it was Van Nuys. Aviation is 24/7, I understand hating it but if you just opt to not go in when lots other people are going in and even more are depending on you I shake my head. Don't ever ask why pilots these days don't get more professional respect.