PORTLAND, Maine- Petty Officer 2nd Class Christopher Johnston asks security personnel at the South Portland Ocean Terminal for their Transportation Worker Identification Credential, Wednesday, Oct. 15, 2008, as part of a random inspection to ensure all workers at the terminal are in compliance with the new regulation. Possible penalties for not having a TWIC card include: warning letters, civil penalties up to $25,000 per violation per day, or cessation of operations. (U.S. Coast Guard photo/Petty Officer 3rd Class Etta Smith)