And, as I've said before, there must be some proof that putting gays and straights together will cause massive issues/problems with sexual harassment. You have yet to show that this will happen. In fact, I have provided anecdotal evidence that it hasn't happened in units where gays were serving openly.
First of all, I specifically stated in what you posted that the military most likely wouldn't reverse its policy on separating genders. This doesn't mean that they legally couldn't. It means that the military can see that there would be a huge amount of issues that would arise from having men and women sleep/shower together. However, gay men and straight men and gay women and straight women already do sleep/shower together. The only difference with a repeal of DADT is that some people will find out that some of those men and women that they were showering/sleeping with are gay. This will have little affect, if any, on how those who are openly gay act around others in their units. It may have some affect on how some soldiers view those who have revealed themselves to be gay, but those issues can be dealt with by other rules already in the military.
And why do you keep insisting that I ask my brother or husband these questions? I have served time in the Navy. And, I know how things work. Also, my brother probably knows more about this issue than you could ever imagine. He is a heterosexual crossdresser. While in the Army, he told us that he wanted a sex change. He hid that part of his life from most everyone he worked with because many people believe that all crossdressers are gay.