Isn't there a tax break for the airlines that allows their aircraft to be used by the military? That's why there is a flag on the side of many airlines or are the airlines just "abusing" that privilege for a tax break.

This book should answer any questions regarding those that serve (or military leave abuse):
The USERRA Manual: Uniformed Services E... | Legal Solutions

"War is an ugly thing, but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war, is much worse. A man who has nothing which he is willing to fight for, nothing which he cares more about than he does about his personal safety, is a miserable creature who has no chance of being free, unless made and kept so by the exertions of better men than himself. As long as justice and injustice have not terminated their ever-renewing fight for ascendancy in the affairs of mankind, human beings must be willing, when need is, to do battle for the one against the other.” John Stewart Mill

Thank you to those that serve us!!!