President Obama says he wants to reverse "Don't Ask Don't Tell," the Clinton-era policy that prevents openly gay men and women from serving in the military. But so far the White House has been noncommittal about how and when he will try to make that happen. In an effort to prod the president and Congress to act, activists -- gay, straight, military and civilian -- will converge on Capitol Hill Friday to rally behind an effort in the House to overturn the policy, which has been a continuing source of controversy since it became law 15 years ago.