900,000 properties, over 3 billion square feet and over 40 million acres of lan. but many of the properties are under utilized, mismag managed or sitting empty, costing billions of dollars. you don't have to look hard. in fact, we are a few blocks from the u.s. capitol, where this building, owned by the gsa, has been sitting empty over five years. congressman john mica of the transportation and infrastructure committee wants something done about t. where are we? >> we are in an empty federal building that has been vacant for five years, costing the taxpayers a lot of money. as you can see, there is nobody here. >> reporter: and in this particular building, you said it's empty for five years. whose building is it? why is it empty? >> it's the people's building. it's under the control of gsa. it's costing, not just this building, but across the country, we are losing probably