TITUSVILLE, Fla. – Two suspects are in custody for their involvement in a shooting at a 7-Eleven gas station that left a man with life-threatening injuries, according to the Titusville Police Department.Police said the victim was at the pumps at the gas station on South Hopkins Avenue Tuesday when he got into a brief physical fight with Bobby Mack Britt, 19, and then moments later, he was involved in a fight with Reshod Benjamin Lewis, 27.As the victim and Lewis were fighting, Britt shot the victim from behind, a news release said.Officials did not say why the men were fighting.The man was taken to an area hospital with life-threatening injuries, records show.