Lawyers for Army doctor Jeffrey McDonald, who is shown in this March 1, 1995 file photo at the federal correctional institution in Sheridan, Ore., are hoping that DNA technology not available during his trial will help him regain his freedom. MacDonald, 55, is serving three life sentences at a federal prison in Sheridan, Ore., for killing his pregnant wife, Colette, and daughters Kimberly and Kristen on Feb. 17, 1970. MacDonald has said a band of drug-crazed hippies attacked his family at their Fort Bragg, N.C. home, chanting "Acid is groovy. Kill the pigs." (AP Photo/Shane Young, File) SHANE YOUNG — AP