It is a defensive end who lines up outside the shoulder of the offensive tackle. There are 9 techniques, a five is basically a typical 4-3 defensive end.
Depending on the setup its either 3-4= Defensive End/Nose Guard/Defensive End 4-3= Defensive End/Defensive Tackle/Defensive Tackle/Defensive End 5-2=Defensive End/Defensive Tackle/Nose Guard/Defensive Tackle/Defensive End
Switching from a linebacker to a defensive tackle require two different techniques. It is important to learn and master the technique of the position you would like to play.
about 6"3"
Lawyrence Taylor (retired) is the best defensive tackle in the NFL.
Dennis Johnson - defensive tackle - died in 1997.
Kevin Brown - defensive tackle - was born in 1985.
David Howard - defensive tackle - was born on 1987-##-08.
Steven Harris - defensive tackle - was born on 1984-08-14.
Terry Jones - defensive tackle - was born on 1956-11-08.
Charles Alexander - defensive tackle - was born on 1985-10-09.
Tyrone Williams - defensive tackle - was born on 1972-10-22.