Entitlement to service connection for left knee disability is denied.

Board reasoning

The Board denies all listed service-connection claims. It finds no credible in-service evidence of knee, back, or feet injuries, and the medical opinions of record uniformly conclude that current disabilities are less likely than not related to service. The Veteran’s lay statements about in-service injuries and post-service symptoms are not credible and are given no weight; the Board relies on the contemporaneous STRs and post-service medical opinions to support the denials.