US soldiers patrol in the southern Afghan province of Kandahar
On a rooftop terrace blocks from the White House, a collection of former soldiers and intelligence officers, executives and contractors drink to the international private security industry.
The past decade - particularly the U.S.-led wars in Iraq and Afghanistan - provided rich pickings for firms providing private armed guards, drivers and other services that would once have been performed by uniformed soldiers, reports Reuters.
But as the conflicts that helped create the modern industry wind down, firms are having to adapt to survive. They must also, industry insiders say, work to banish the controversial image of mercenary "dogs of war" that bedevil many firms, particularly in Iraq.
"This industry has always gone up and down," Doug Brooks, president of the International Stability Operations Association (ISOA), told Reuters on the sidelines of its annual conference in Washington. "What we're seeing now is that it is becoming much more mature - and much more responsible."
The free-for-all atmosphere that pervaded the industry, particularly in the early years of the war in Iraq, insiders say, appears gone for good. A string of high profile incidents - often involving armed private guards firing on sometimes unarmed Iraqis - trashed the reputation of firms such as Blackwater, a Virginia-based firm since renamed several times, as well as the wider industry.
Members of the ISOA - which include some but not all of the major contracting firms as well as smaller players - subscribe to a code of conduct that they say helps identify responsible firms.
Despite these efforts, industry insiders and other observers say quality remains mixed. Some firms providing armed guards for merchant ships passing through the Somali pirate-infested Indian Ocean, for example, only hire elite personnel who have served in the Marines or Special Forces. Others, however, have a reputation for being less discriminating and for unreliable staff and weapons.
In the aftermath of last month's attack on the U.S. diplomatic mission in Benghazi, which killed the U.S. ambassador to Libya and three other Americans, critics have seized on the hiring of a little-known British private security firm now accused of providing inadequate protection at the mission.
The clear industry aim is to distance itself from groups such as that led by former British soldier Simon Mann, who was captured in 2004 by authorities in Zimbabwe as they apparently headed to Equatorial Guinea to mount a coup.
The word "mercenary," Brooks makes clear, is simply taboo.
"Calling private security contractors mercenaries is clearly derogatory and serious journalists and academics don't use the term," he says.
The most vulnerable firms, many in industry say, may be those who have relied on ongoing U.S. military work that is now drying up as the Pentagon "Operational Contingency Allowance" - the additional funding earmarked for the wars - tapers off.
At its peak, the U.S. Commission on Wartime Contracting, a bipartisan legislative commission established to study wartime contracting in Iraq and Afghanistan, estimated there might have been as many as 260,000 contractors in the two countries.
"At the moment, everyone is looking for work that is not OCA-funded," one industry executive told Reuters on condition of anonymity, saying he expected an era of mergers and even bankruptcies. "It's going to be like when the tide goes out at the beach and you suddenly find out who has been naked."
New Pentagon priorities, many believe, will provide fewer openings for traditional private military contractors. Washington's strategic "pivot" to the Asia-Pacific region will involve mainly warships or uniformed Marines, with little need for extra hired muscle.