Who is Master Gunnery Sergeant Jack Stecker from The Corps: Book 1 Semper Fi and what is their importance? The_Corps:_Book_1_Semper_Fi English & Literature Master Gunnery Sergeant Jack Stecker | The Corps: Book 1 Semper Fi

Master Gunnery Sergeant Jack Stecker has been in the Marines for twenty- five years. He is married to Elly and has two sons. He is a Medal of Honor winner in World War I so both boys attend the service academies. He finds out what Macklin is doing to McCoy at the Platoon Leader's Course and puts an end ot it. Stecker is promoted to captain. His son Jack is killed in the attack at Pearl Harbor.