PORTLAND, Ore. — Coast Guard Petty Officer 3rd Class Jennifer Mahn, a reservist with Coast Guard Station Portland, recently returned from an extended tour of duty for the Deepwater Horizon Oil Spill Response. Mahn was called to active duty in August, 2010, and remained on active status for the 22 months following her report date. During her tenure on the response, Mahn worked more than 1,500 hours...