[JURIST] Twelve homosexuals who were expelled from the US military because of their sexual orientation filed a lawsuit in Boston on Monday, challenging the constitutionality of the Pentagon's 11-year-old "don't ask, don't tell" policy. The complaint relies in part upon last year's Supreme Court ruling in Lawrence v. Texas, which overturned state laws criminalizing homosexual sex. Other courts have upheld the policy, but those decisions came before the 2003 Supreme Court ruling. AP has more. The Servicemembers Legal Defense Network (SLDN) has information about the plaintiffs in the lawsuit.