This bill establishes new requirements for the health and welfare of certain members of the Armed Forces, primarily through mandated wellness checks. The Secretary of Defense must issue regulations requiring these checks whenever a service member sustains a significant injury or illness, or is on sick call. If a member does not respond to electronic or telephone contact, the individual conducting the check must progress to an in-person method of contact , and failure to locate a member triggers established Department of Defense procedures for reporting them as missing or absent. Furthermore, the bill outlines specific responsibilities for unit commanders , including coordinating with judge advocates for implementing these regulations. Commanders are also required to routinely review and update "Commander's Critical Information Requirements" and host confidential wellness meetings with subordinate commanders and medical officers to discuss significant health issues. Finally, each Secretary concerned and the Secretary of Defense must develop training courses for military and civilian personnel to emphasize accountability, the importance of wellness checks, and the potential negative outcomes when these procedures are not followed.