at http://www.tsa.gov/stakeholders/transportation-worker-identification-credential-twic. This is the "down side" of the TSA one-visit program. It remains to be seen how many of the cards will fail to reach the end receiver. Persons who have received the card through the mail tell me that the envelope is clearly marked "Transportation Security Administration".
NEW! Reporting Non-Receipt of Mailed TWICs: TWIC applicants who request to receive their TWIC card by mail will receive a phone or email notification that the card has been mailed. After notification that the card has been mailed, applicants have 60 days to report non-receipt of the card by contacting the Universal Enrollment Services (UES) Call Center at: (855) 347-8371. Failure to report non-receipt of the card within 60 days will result in a $60 fee to replace the lost card.