This blog has now closed. Read our latest story hereTwo federal officers fired their guns during the fatal shooting of Alex Pretti, according to an initial review by the Department of Homeland Security that was obtained by NBC News.Three sources told NBC News that the preliminary report, from a Cust oms and Border Protection internal investigation led by the agency’s Office of Professional Responsibility, was sent to congressional committees yesterday, including the House homeland security and judiciary committees. Continue reading... ...read more read less