TINKER AIR FORCE BASE, Okla. -- An Air Force member killed his two children before killing himself in a military campus house at Tinker Air Force Base on Monday, authorities said. According to Oklahoma County Sheriff John Whetsel, a military member and his ex-wife were involved in an altercation just before 2:30 p.m. The ex-wife left the home and heard gunshots, Whetsel said. Tactical teams arrived by about 2:40 p.m. Nearly two hours later, they gained entry into the home, where they found three people dead -- including two children, ages 4 and 8. Whetsel said his department is investigating...