S. Rept. 116-187: Veterans Expedited TSA Screening Safe Travel Act, Report, Including Cost Estimate of the Congressional Budget Office, December 19, 2019 [open pdf - 402KB]
From the Document: "This legislation would provide TSA PreCheck as a no cost benefit for qualified Veterans who are amputees, blind, or paralyzed. [...] According to the Transportation Security Administration (TSA), the use of TSA PreCheck in conjunction with TSA Cares (a helpline for veterans with disabilities, medical conditions and other special circumstances) would provide the best experience for these disabled veterans. There are approximately 70,000 amputee veterans, 100,000 paralyzed veterans, and 130,000 legally blind veterans in this country. Providing no-cost TSA PreCheck to selected severely disabled veterans would make it easier and less time consuming for them to clear the checkpoint. TSA has stated that available carryover funds would cover the initial enrollment fee for all covered disabled veterans (5 years) without impact to TSA PreCheck fees charged to others."
S. Rept. 116-187; Senate Report 116-187
U.S. Government Publishing Office: http://www.gpo.gov/