The handheld device--made by Research in Motion (RIM), which pioneered on-the-go e-mail in 1999--is facing stiff competition from a brambly bunch determined to break the BlackBerry .
Favored to succeed Air Force Chief Thomas White, 59, who is planning to retire this summer, is Vice Chief Curtis LeMay, 54, the brambly former SAC commander.
The film's second half is virtually nonstop tension for the heroine (the expertly hysterical Marilyn Burns) and the audience: a long chase through the house and its brambly .