Dulles Airport, Chantilly, VA: Glenn Anderson, SCS technician for Fairfax County, left, and Gilbert J. Tobin, horticulturalist for Dulles Airport, examine new growth on loblolly pines planted on the outer fringes of the airport. The tree plantings are part of the 1000-foot-wide buffer zone around the airport. Over two million trees have been planted in this zone. (photographer: Gordon Smith), 1964