They were smart, scrappy brothers who rose from modest circumstances in Baltimore to become lacrosse stars at Princeton, succeed in business and land big government jobs. Now the Krongard brothers - who have carried childhood nicknames, Buzzy and Cookie, through long careers - are tied up in the tangled story of Blackwater, the security contractor accused in the deaths of at least 17 Iraqis while guarding a State Department convoy in Baghdad. The shorthand version boils their involvement down to that Washington catchall conflict of interest. The full story appears more complicated. Alvin [Buzzy] Krongard, 71, ... left a $4 million-a-year job in investment banking to serve in top posts at the Central Intelligence Agency from 1998 to 2004. Buzzy Krongard spoke [to the New York Times] in his 15,000-square-foot Georgian mansion, Torch Hill, north of Baltimore. After rising to the helm of Alex. Brown & Sons, the venerable Baltimore investment banking firm, Buzzy Krongard oversaw its acquisition by Bankers Trust in 1997 and left the next year for the C.I.A., as a counselor to George J. Tenet, then the director of central intelligence. He became executive director, the No. 3 post, in 2001 and helped design the agency's secret detention program after the Sept. 11 attacks. Buzzy Krongard vigorously defends Blackwater's record in Iraq. It's very easy to second-guess them when you're sitting back in an air-conditioned office," he said.