Plane Crash Was Family's 2nd Tragedy in 4 Days Cessna pilot's uncle, aunt were murdered days earlier By Newser Editors and Wire Services Posted Jul 9, 2015 12:57 AM CDT Updated Jul 9, 2015 4:33 AM CDT 3 comments Comments Debris from an F-16 fighter jet and plane collision is scattered on the ground near Moncks Corner, SC. (WCIV-TV via AP) (Newser) – A collision between a small plane and an F-16 fighter jet that killed a father and son was the second fatal tragedy to strike their family in just four days, a relative says. Michael Johnson, 68, and his son, Joseph, 30, died when the Cessna 150 flown by the younger Johnson was torn apart Tuesday in the accident with the jet. On Saturday, Michael Johnson's brother and sister-in-law were found dead at their home in Missouri. The couple's 16-year-old grandson has been charged with second-degree murder in the slayings, police say. "It's unbelievable," says Connie Stallworth, the older men's sister. "There just aren't words to express it. I'm dumbfounded that it happened twice in a few days."