co-founders Blake Hall and Matthew Thompson in 2012. (Jeffrey MacMillan/For The Washington Post)

McLean-based is getting by with a little help from a friend: Uncle Sam.

The General Services Administration has chosen the start-up as one of a handful of companies that will verify the identification of users who enter, a soon-to-launch Web site where people can enter a single user name and password to access services from several government agencies.

Co-founded by Blake Hall and Matthew Thompson, allows Internet users to prove their status as a veteran, first responder, teacher, student or member of another specialized group. That credential then allows them to access certain government programs or secure specific discounts at retailers.

Thompson said the amount of money generated by the GSA contract will vary, depending on the number of people who use credentials to enter

In addition to money, executives hope the deal will bring greater exposure. The company previously secured Federal Identity, Credential, and Access Management approval for its software, meaning can be used when high levels of security are required.

The State Department, Department of Veterans Affairs, Agriculture Department, General Services Administration and the National Institute of Standards and Technology are among the federal agencies that already plan to use, according to

Beyond government, continues to add to the list of retailers who use its online credential to verify customers’ eligibility for discounts. Among the merchants using are Under Armour, Dell, Hershey, Overstock, Columbia Sportswear Co. and

Growing up fast

Frederick-based D ecisive Communications, a technology and construction contractor servicing the telecommunications and cable industries, hit a corporate milestone last week when executives announced the company hired its 400th employee.

Founded in 2004, Decisive Communications can point to several drivers behind its 10-year growth trajectory.

Its revenue, according to the company, has climbed from $4 million in 2008 to $44 million in 2013. That equates to 1,000 percent growth during a five-year period bogged down by the economic recession.

Who is paying that money? Decisive Communications touts a diverse roster of clients that includes major cable and broadband providers, including Comcast, Time Warner Cable and Cox Communications, as well as national retailers and state and federal governments.

The company has also expanded its geographic footprint over the past 10 years, in large part because of key acquisitions in the past two years. What started as a business focused solely on the Mid-Atlantic now covers an area that stretches from North Carolina to New England.

All of that adds up to employee No. 400.

“We take pride in celebrating our 400th employee, and the fact that we have successfully been able to serve some of the biggest clients in the business,” President Tim Harwood said in a statement. “Decisive is focused on providing our clients with exceptional customer care and will continue to make that our goal as the company expands to include additional locations across the country.”