Military personnel in uniform are required to salute when they meet and recognize persons entitled (by grade) to a salute except when it is inappropriate or impractical (in public conveyances such as planes and buses, in public places such as inside theaters, or when driving a vehicle).
One notable player, Shawn Kemp, enrolled in college but never played any games due to personal problems. In 1989, a year after his high school graduation, he was drafted by the Seattle SuperSonics. He played 14 seasons in the NBA and was selected to 6 All-Star Games and 3 All-NBA Teams.
Hakeem Olajuwon played for the Toronto Raptors once upon a time. The first overall pick in the 1984 draft, Hakeem Olajuwon ended up spending the first 17 seasons of his 18 year career with the Houston Rockets after the team won a coin flip over the Portland Trail Blazers to get the top selection that year.