Cadets lived in WMU Dormitory, attended classes in Shawnee Hall, drilled on the campus oval, and exercised on the athletic fields. During the time of the U.S. Army attachment during World War II, approximately 2,000 cadets were trained during the sixteen months of OBU retaining military detachment. According to John Wesley Raley, OBU's president during that time, "OBU's participation in the military program provided several benefits: Satisfaction that the university had participated in the war effort; favorable advertising through the cadets who had been on campus; the ability to maintain a strong faculty, despite the decline in regular enrollment which had dropped to 326 in 1943, the smallest enrollment since 1918; the maintenance and enlargement of the physical plant; and operating without a deficit during a 'most difficult period for colleges'". Although the university participated in the war effort during World War II, the university does not have an active ROTC program at this present time. Total annual enrollment in the university exceeded 1,000 for the first time in 1946. OBU was officially racially integrated in 1955, when the Board of Trustees approved a motion by Dr. Herschel H. Hobbs, pastor of Oklahoma City's First Baptist Church, to allow African American students admission to the university. In January 1964, during final examinations week, the school narrowly missed disaster when a man flew a small airplane into Shawnee Hall. The man had been hospitalized for mental health problems but had been released and was able to rent a plane in Tulsa. He radioed the Shawnee airport and reported that he was going to fly his plane into OBU's administration building. Authorities evacuated Thurmond Hall, which had been the university's administration building since 1954, and moved students to Shawnee Hall, the primary classroom building. Shawnee Hall had been the administration building prior to 1954. The pilot then flew his plane into one of the few empty classrooms in the building and when the plane crashed into room 307, the students made a calm and orderly exit. The pilot was killed and the exterior impact area along with two classrooms were badly damaged. None of the 300 students, faculty, or other staff were injured. Today, Shawnee Hall bears the scars of this incident. Although all damage has been repaired, the brick and mortar on the south side of the building is discolored in one area on the third floor when Shawnee Hall is