Russian bombers penetrated U.S. airspace at least 16 times in past 10 days

Russian strategic nuclear bombers conducted at least 16 incursions into northwestern U.S. air defense identification zones over the past 10 days, an unusually sharp increase in aerial penetrations, according to U.S. defense officials.

http://www.washingtontimes.com/news/2014/aug/7/russian-bombers-penetrated-us-airspace-least-16-ti/