The fifth Annual DC Firefighters Burn Foundation Tree Lot has returned to Sixth Engine, 438 Massachusetts Ave. NW, with a second location added at The Salt Line, 79 Potomac Ave. SE. Shoppers can choose from Fraser and Douglas firs starting at $50, as well as tree stands, wreaths, garlands and collectable DCFD ornaments. 100 percent of the proceeds will be donated to the DC Firefighters Burn Foundation. The lots are open weekdays 4 to 9 p.m. and weekends 10 a.m. to 9 p.m. All purchasers will receive a special gift from Sixth Engine/The Salt Line.