Gulfstream parent General Dynamics’ second-quarter revenues totaled $5.2 billion, a 12-percent year-over-year gain propelled mostly by a 33-percent increase in earnings at the Savannah, Ga. aircraft manufacturer. The OEM delivered 22 completed aircraft–14 large-cabin and eight midsize jets–in the second quarter versus 18 (15 large, three midsize) in the same period last year. Gulfstream delivered 37 completed aircraft in the first half of the year, seven more than in the first six months of last year.