(Irving, Texas) - The National Wireless Safety Alliance (NWSA) convened its distinguished group of leading subject matter experts this week to continue the assessment and certification development process for the Telecommunications Tower Technician I (TTTI) and Telecommunications Tower Technician II (TTTII) programs. The intensive NWSA task force meetings occurred over a 3-day period and were hosted by AT&T at the AT&T Center for Learning in Irving, Texas.