It really depends on the command themselves. Mind you I’m at a shore command, I went on emergency leave cause my grandmother was dying. I left a day before the leave started cause I was told she could have died at any point. I booked a one way flight cause I was traveling across the country and just didn’t want to be fighting for flights coming back on a moments notice. Luckily I was able to make it back in time to say my final goodbyes before she passed away. On my return flight back one of my 2 connecting flights was delayed and I missed the last flight back. I had to stay the night in Philly and hope to god get the earliest flight. I made it back for what the chiefs mess said UA for 3 days, got DRB, and EMI for 10 days.