Transgender troops serve in silence
Coming out as transgender would get them kicked out of the U.S. military.

WASHINGTON As the military begins to embrace gays and lesbians, one group feels left out: transgender troops.

These men and women weren't even a blip on the nation's radar until former Navy SEAL Team 6 member Chris Beck revealed in a memoir released last month that he had become Kristin Beck, a woman.

It's unknown how many transgender troops are serving in the U.S. military, largely because they would get kicked out for coming out. About 700,000 Americans in a population of more than 300 million are transsexuals, according to a 2011 study by the Williams Institute at the UCLA School of Law.