^ also, the typical lines are about 12-13 days of work. Three four-days or four three-days are pretty common. (More three days than four) And many combinations 1/2/3/4 days. Pre-everything - trading stuff around was easy, now it’s sometimes possible and difficult when you can. Reserve is 15 days a month. I live in base so I’m almost always willing to break up a four day with a trade - so I’d imagine it’s not hard to turn broken up 4 days into 4 day trips.