Why aren't all 3 paid? They did their part, they made themselves available and reported for duty - regardless of what happened to the trip. Would they not get paid if they wx cnx'd? The CMAS request and orders should have been done long before the trip was canceled. CMAS requests are tied to dates of duty, not trips. Once the member and the squadron come to an agreement, the airline guy dropped for mil leave and the squadron started the CMAS/orders process. The money is allocated at that point and no one on the AD side pulls the money back if the trip does not go. If the orders are canceled at a later date, that's something that the USAFR squadron is doing on its own accord. They are artificially lowering their cost by not charging AD for having the pilots commit to a status, they are trying to minimize the MPA money paid out by shorting the USAFR member.

In other words, your leadership needs to grow a spine and do what's right for the member who stepped up and answered the call when asked, regardless if they work for an airline or not. It's time for the commander to be a commander.