(AP) — There was no easing back into classes at the University of Alabama in Huntsville on Monday: Many students and teachers had to return to the building where three professors were gunned down more than a week ago.Classes resumed on the campus where authorities and witnesses say Amy Bishop, a biology professor bitter over being denied tenure, opened fire in a small conference room, killing three colleagues and wounding three others.Band members from nearby Oakwood University greeted the UAH students as they returned to campus, playing music and offering hugs.Meagan Warner, a student walking into the Shelby Center for Science and Technology, said she appreciated the support.”I have four classes in this building today, and it helps me feel at ease and that it’s safe to be back on campus again,” she said.School administrators said the corner of the building where the slayings occurred remained off limits.In Massachusetts, meanwhile, a former district attorney who is now a congressman said Monday it was a shame Bishop did not receive a mental evaluation after fatally shooting her younger brother in the family’s kitchen in Braintree, Mass., in 1986. The killing was declared an accident and Bishop never faced charges.Details about that case have emerged in the wake of the Alabama slayings. U.S. Rep. William Delahunt, a former prosecutor who oversaw the district where it happened, said state police working for his office weren’t told that after Bishop shot her brother, she allegedly threatened two auto shop workers with the gun, demanding a car, or that she aimed the gun at police.Had he known that, Delahunt said, his office would likely have sought weapons charges against Bishop and would “undoubtedly” have asked a judge to order her to undergo a psychiatric evaluation.He would not speculate on whether that evaluation could have prevented the shootings in Alabama but said, “I think that opportunity was missed, and that to me is a profound tragedy in this case.”He said nothing contradicts the determination that the shooting was an accident.The Harvard-educated Bishop, 45, remains jailed in Huntsville, charged with capital murder and attempted murder in the Feb. 12 shooting.Police have not offered a motive, but colleagues say she had complained for months about being denied the job protections of tenure. Her attorney said she needs mental evaluations and is laying the groundwork for an insanity defense.—————Contact The Daily Reveille’s news staff at [email protected]