HS - 4 was on scene for Apollo missions 8 , 10 , 11 , 12 , and 13 .
From late 1968 through the spring of 1970 , the Black Knights of HS - 4 participated in and pioneered techniques for the Apollo capsule recoveries .
Black Knights     was on scene for Apollo missions 8 , 10 , 11 , 12 , and 13 .
From late 1968 through the spring of 1970 , the Black Knights of HS - 4 participated in and pioneered techniques for the Apollo capsule recoveries .