About a year http://www.primature-tchad.com/grind-and-brew-coffee-technologies/ buy premarin Loren Thompson, chief operating officer of the Virginia-based Lexington Institute, said the margin pressures were exacerbated by Boeing's aggressive bids for the Air Force tanker program and the biggest U.S. missile defense program. In both cases, Boeing's low bids saddled it with low-margin contracts.