ORLANDO, Fla. — A 2-year-old boy shot and killed his father at their east Orange County home last month, Sheriff John Mina said Monday. Mina said the boy’s 26-year-old father, Reggie Mabry, was found wounded about noon May 26, after deputies went to their home in response to a 911 call about a shooting. The man’s wife, 28-year-old Marie Ayala, was performing CPR when rescuers arrived. Mabry was pronounced dead at the hospital and deputies initially thought the shooting was a suicide, the sheriff said at a news conference. But then, the couple’s 5-year-old child told detectives that the 2-year-…