Times were tense before the initial February assault on Marjah, Afghanistan. A narcotics hub and Taliban stronghold, it was expected to be booby-trapped with improvised explosive devices and filled with insurgents waiting for a fight. Obviously, the Corps took control of Marjah within days. It’s still a dangerous place, but one where Marine officials say they see hope, at least. Before the assault, Gunnery Sgt. Brian Walgren, the company gunny for Alpha Company, 1st Battalion, 6th Marines, fired up his troops with a gritty, heartfelt speech. In many ways, it shows the best of the Corps. Occasionally profane but filled…