An investigator walks at the scene of a shooting at a shopping center in Abingdon, Md., Wednesday, Feb. 10, 2016. A man opened fire inside the crowded restaurant during lunchtime. (AP Photo/Patrick Semansky)

Sheriff: 67-year-old man killed 2 deputies

The son of a gunman who fatally shot two Maryland sheriff’s deputies before he was killed in a shootout says his father was a heavy drinker …