Second Lieutenant Ivan Zelenin, a student at the Basic

Second Lieutenant Ivan Zelenin, a student at the Basic Officer Course, makes his way over the double bar portion of the obstacle course aboard Marine Corps Base Quantico, June 19, 2019. The Basic Officer Course is six months long and is designed to train and educate newly commissioned or appointed officers in the high standards of professional knowledge, esprit-de-corps, and leadership to prepare them for duty as company grade officers in the Marine Corps, with particular emphasis on the duties, responsibilities, and warfighting skills required of a rifle platoon commander. (US Marine Corps photo by 2nd Lt. Isaac Lamberth)