 Northern Virginia's office vacancy rate rose to 24% in the second quarter. Although CBRE says most lease renewals in Northern Virginia last quarter were not downsizing, defense and engineering companies accounted for half of Northern Virginia office leases signed or renewed last quarter. The Dow lost 31 points today. The S&P 500 gained just six, but it closed at a record. The Nasdaq gained 51. It closed at a new high. Jeff Claybaugh, WTOP News.