Clinton Signs Books at Pentagon City Costco — Former Secretary of State and likely 2016 presidential candidate Hillary Clinton signed books at the Pentagon City Costco store on Saturday. One group of Clinton supporters who lined up outside the store Saturday morning told ARLnow.com that they were in line for more than 4 hours before getting their books signed. The signature: a simple, cursive “Hillary.” Also dropping by on Saturday was Supreme Court Justice Sonia Sotomayor, who was shopping and stumbled upon the event. [Huffington Post, Washington Post]

Board Approves Waycroft-Woodlawn Plan — The County Board on Saturday unanimously approved an updated Neighborhood Conservation Plan for the Waycroft-Woodlawn community, located northwest of Ballston. The plan calls for funding “to address speeding and cut-through traffic, improve pedestrian safety, enhance street conditions and make park improvements.” Waycroft-Woodlawn has 1,600 residents, mostly in single-family homes. [Arlington County]

Healthy Vending Machine Installation Complete — Arlington Public Schools has completed installation of 115 new “FitArlington Healthy Vending Machines” in all 40 APS-owned buildings. The machines offer “bottled water and 100% fruit juice beverages, and a variety of healthy snacks, such as dried fruit, baked chips, and granola bars.” [Arlington Public Schools]