The Transportation Security Administration of the Department of Homeland Security provides screening assistance to people with disabilities at airport checkpoints throughout the United States.
Travelers requiring special accommodations or concerned about the security screening process at the airport may ask a TSA officer or supervisor for a passenger support specialist who can provide on-the-spot assistance.
See the following links for more details:
Call 72 hours prior to traveling with questions about screening policies, procedures and what to expect at the security checkpoint: (855) 787-2227