The American Association of Port Authorities' (AAPA) 12th Port Security Seminar and Exhibition, is being held in , July 16-18. The expo plans to address concerns focusing on the security and safety challenges confronting public seaport agencies and marine terminal operators throughout the . The seminar will also feature a day-long exhibition on July 17 to showcase the latest security trends, technologies and products in the seaport industry. Some of the key topics to be discussed include implementing the Transportation Worker Identification Credential (TWIC) program (including the devices that will eventually "read" the embedded biometrics in TWIC identification cards)…