Falls Church Getting First Roundabout — “Construction work on the first traffic circle in Falls Church is gearing up. Signs are in place for the project at S. Maple Avenue and Annandale Road, which will convert the existing four-way stop with traffic lights into what transportation planners hope will be a better travel experience.” [ARLnow]

DCA Crash Review Could Change Air Travel — “The National Transportation Safety Board is now reviewing three days of testimony from last week’s public hearings into the Jan. 29 midair collision near Reagan National Airport that killed 67 people. One of the country’s leading aviation safety analysts believes that sweeping changes are likely to come not only to the operations near DCA, but to the entire aviation system as a result of this crash.” [WTOP]

Vacant Tysons Parcel Up for Auction — “The vacant 1.8-acre lot at 8346 Leesburg Pike on a map — technically 8350 Leesburg Pike in property records — will be auctioned off Sept. 4, according to Alex Cooper Inc., the auctioneer.” Owned by an affiliate of NVCommercial Inc, the parcel was slated to become two high-rises — one with a hotel and housing over retail and another with apartments and a “public facility” over retail — under the Tysons Central plan approved by Fairfax County in 2013. [Washington Business Journal]

Dolphins in Chesapeake Bay — “The researchers had found their subjects: Tamanend’s bottlenose dolphins that call the waters around Chesapeake Bay home. Researchers estimate at least 500 to 600 of these dolphins have regularly visited the Potomac River and Chesapeake Bay over the past decade, with one sighting dating back to the 19th century.” [Washington Post]

Popular Tysons Cafe Expands — “Shotted Specialty Coffee, a Saudi-inspired coffee bar, has opened its newest location at 7380 Atlas Walk, Gainesville, VA. This is the fourth Shotted location, joining ones at Tysons Corner Center, Tysons Galleria and Dulles Town Center.” [Patch]

Police Celebrate National Night Out — “RA members are invited to join their neighbors in celebrating National Night Out on Tuesday, Aug. 5, with two free events focused on building community spirit and strengthening partnerships with local law enforcement. Reston Association is proud to support both events, which are open to the public and offer fun, food and family-friendly activities.” Other events are planned at Fairfax County’s community centers, the Mosaic District, Annandale Shopping Center and elsewhere. [Reston Association]

Final Events at The Block — “The Block food hall has scheduled a few final events before it shuts down for good at the end of the month. The venue is hosting an ‘everything-must-go thrift pop-up’ every Tuesday, 5-9:30 p.m., on Aug. 5, 12, 19, and 26. On Aug. 16, it’s ‘Last Call at The Block,’ featuring Arylia, DJ Knom, and DJ Adobo, 10 p.m.-2 a.m.” [Annandale Today]

More Stops Added to Discovery Trail Challenge — “The Fairfax County Park Authority is proud to announce that three exciting new sites have been added to the odyssey! Discover hidden wildlife hotspots at Huntley Meadows, step into a bygone era at Grist Mill Park’s historic barn and check out Mount Vernon Rec Center’s brand-new recreation facilities.” [FCPA]

It’s Tuesday — Expect mostly cloudy skies with a high near 84 and calm winds shifting to an easterly 6 mph breeze in the afternoon. Tuesday night will see similar cloud cover, alongside a low of 69 and a southeast wind at 5 mph, diminishing to calm winds later in the evening. [NWS]