Business Boom For NVR — Reston-based home builder NVR announced it had second-quarter net income of $68.2 million, or $15.17 per share. Earnings were up 34 percent from a year earlier and revenue rose 9 percent to $1.1 billion, even as new home contracts have fallen nationwide. [Washington Business Journal]

New Rules for Bar Crawls — Bar crawls in Arlington County may be changing after the Arlington County Board approved new event regulations at its meeting on Saturday. The new regulations will include fees charged to the organizers to recoup the cost of extra police and community resources required to deal with the nearly 5,000 people estimated to attend some of the crawls. The change comes, in part, after a Reston woman stripped naked at the police station after a St. Patrick’s Day crawl this year. [ARLnow.com]

Dr. Gridlock Rides Simulated Metro Service — Monday was the first day of the Silver Line’s simulated service. The Washington Post’s “Dr. Gridlock” rode the existing trains to see the impact of the Silver Line on crowds and wait time. [Washington Post]

Ask Silver Line Bus Questions — Fairfax County will hold a second online chat to answer questions about Silver Line bus service changes. The chat is Friday, July 25 from 1:30 to 2:30 p.m. [Fairfax County]