I'm not sure how seriously to take this, but Marcy Wheeler retweets this from petulantsage:
Every person I've talked to over the past 48 hours, who works for a 3 & 4-star agrees: it's open warfare. USMC and AF will kill repeal.
No surprise, I guess. The Marine Corps (too red-blooded for gays) and the Air Force (too evangelical Christian for gays) have always been the most opposed to repeal of DADT. We'll see who wins the war shortly.