Christina Johnson, Marine Veteran and project manager for the National Museum of the Marine Corps, stands in front of the Marine Corps Embassy Security Guard section of the museum in Triangle, Va. Johnson's role as project manager is to ensure that the team meets deadlines for events and exhibits currently being constructed. - Christina Johnson, Marine Veteran and project manager for the National Museum of the Marine Corps, stands in front of the Marine Corps Embassy Security Guard section of the museum in Triangle, Va. Johnson's role as project manager is to ensure that the team meets deadlines for events and exhibits currently being constructed.

Marine Security Guard students with Marine Corps Embassy Security Group crawl through the collapsed structure trainer at Marine Corps Base Quantico, Va., Feb. 23, 2020. The special duty assignment requires Marines to go through extensive background checks, security clearances, psychological testing, and physical and academic training before graduating from MSG school. - Marine Security Guard students with Marine Corps Embassy Security Group crawl through the collapsed structure trainer at Marine Corps Base Quantico, Va., Feb. 23, 2020. The special duty assignment requires Marines to go through extensive background checks, security clearances, psychological testing, and physical and academic training before graduating from MSG school.