They progress from Third Sergeant ( 3SG ) to Second Sergeant ( 2SG ) to First Sergeant ( 1SG ) .
Specialist cadets who have undergone professional military training courses are known as Specialists .
Specialist cadets progress from Third Sergeant ( 3SG ) to Second Sergeant ( 2SG ) to First Sergeant ( 1SG ) .
Specialist cadets who have undergone professional military training courses are known as Specialists .