our kaj larsen is joining us. you finding out, kaj, about the type of mission those men might have been on? >> good morning. the navy is not releasing eye any details about the specifics of the mission. the reason is, it's occur, in zabul prauvs convince. province. it's been an active area. what we can deduce of what happened, it was a four-man element. generally, a s.e.a.l. platoon is priced of 12. a four-man could indicate they were on a special reconnaissance mission. that would involve looking and gathering information about official targets in the area. that's most likely the case here. >> you talk about the human toll, obviously, every life that's lost in the service is a tragedy. but you talk about the s.e.a.l.s, how irplaceable they are because of the training they go through. how big of a loss is this for the military? >> it is a loss. it's a tough day for my community in particular. we have an adage in special forces that we emphasize humans, not hardware, some each individual s.e.a.l. costs somewhere be