Sources Sought Announcement for 14 New Generator Air Coolers for Broken Bow Powerhouse for US Army Corps of Engineers, Tulsa District. Questions concerning this Sources Sought should be e-mailed to th... Sources Sought Announcement for 14 New Generator Air Coolers for Broken Bow Powerhouse for US Army Corps of Engineers, Tulsa District. Questions concerning this Sources Sought should be e-mailed to the Contract Specialist, Mrs. Tamara Seals at tamara.l.seals@usace.army.mil; phone number (918) 669-4977.