Trooper first class, a rank used by several state police agencies within the United States and in some world militaries, is a rank below senior trooper, yet above trooper and has an insignia that consists of a gold colored 'TFC' collar pin worn on the wearer's right lapel.
Trooper first class is a rank used by several state police agencies within the United States and in some world militaries. In particular, in the Louisiana State Police, it is a rank below senior trooper, yet above trooper. The insignia for this rank consists of a gold colored 'TFC' collar pin worn on the wearer's right lapel. 
