Student communicating with female staff member through assistive technology
A male student communicating via sign language to a female staff member
Dog guiding a visually impaired student

Captioning in Facebook

Recently Facebook began a new service for advertisers (only) to auto-caption all advertisements. This is not an accessibility feature, but intended to "reduce noise without silencing the ad's effectiveness".  It will be interesting to compare the accuracy of Facebook auto-captions for advertisers with YouTube's public auto-caption feature.