A break down in discipline and unit cohesion. A soldier doesn't provide covering fire for a gay soldier that is advancing against the enemy and that gay soldier is hosed down by the bad guys.
A straight soldier is seperated from his unit and one of his gay commrades just leaves him, because he's been picked on for being gay and the lost soldier dies.
The scenarios are virtually infinite.
Your first scenario would not be prevented by DADT. A soldier could find out now that there was a gay soldier or someone that he believed was gay, and choose not to protect the gay soldier from enemy fire. In that case, the person should be punished severely for allowing his fellow soldier to die because he didn't approve of his sexuality.
Your second scenario is also not prevented by DADT. In fact, it is far more likely with DADT in place, because if the closeted gay soldier had to listen to a particular soldier express his disgust of gays day in and day out but is fearful of turning the soldier in because, during the investigation, it could be found that the accuser is actually gay and he could be discharged for doing so, then it would be much more effective for a person who really wanted to rid themselves of such a bigot, to just allow him to get killed in combat. However, that gay soldier should too be punished for allowing his fellow soldier to die because he didn't have the courage to stand up to the guy or at least find a way to turn him in or just deal with it.
There's where you're wrong. It is a right for a soldier to refuse to billet with other soldiers, for numerous reasons. It's covered in Ar 600-20, The Army's Command policy, "Every soldier has the right to work and live in a safe and comfortable environment, free from harassment". So, it's not just about straight soldiers refusing to billet with gay soldiers, it's also about gay soldiers refusing to billet with straight soldiers, because they have the right to, "...live in a safe and comfortable environment, free from harassment".
What are you going to say when gay soldiers refuse to billet with straight soldiers? That's soldier is a bigot? A hetero-phobe? Send him to the stockade for refusing to obey orders.
I think that alot of you, that oppose DADT, are having trouble from looking at this from more than one demension.
A soldier would be required to prove that his roommate is actually harassing him. He cannot simply refuse to berth with someone just because a person is gay and the straight soldier believes that the gay guy may sexually assault him just because he is gay. There has to be documented proof that it likely to happen. And if there is proof, then the gay guy would most likely be punished for it and probably discharged for the sexual harassment.
And the gay soldier would have to have some sort of proof that his safety was threatened by the other soldier, not just his own fear that the soldier might do him harm.
There will be issues with repealing DADT, but they are not nearly as huge as you are making them out to be. Gays and straights already live together in the military.
Well, I think the Commandant understands that those scientific polls are worth jack, when the **** hits the fan. You can't even close a sucking chest wound with it.
Which has nothing to do with why the Cmdt has no idea what will actually happen when the **** hits the fan if he has openly gay troops in his units. In fact, he already does have gay marines who have at least admitted to some of those that they work with that they are gay. One of them came out to his buddy on my lanai in Hawaii. The buddy's reaction was "man, you too? So and so told me he was gay. What is it with all the gay marines coming out to me?" and they moved on to another subject. Most people don't really care if they have to work with gay men/women. And many of those who say that they would care, will most likely see things differently when they actually are working with openly gay men/women. There are other rules in place to deal with those who do or those gay men/women who would cause issues.