The main purpose of the Veterans' Sentinel Act is to improve how data on suicides and attempted suicides among veterans is collected and analyzed, particularly those that occur on the property of the Department of Veterans Affairs (VA). The goal is to better understand these incidents and develop recommendations to prevent them. Key provisions of the Act include the establishment of a working group by the Secretary of Veterans Affairs within 90 days of the law's enactment. This group will focus on gathering and analyzing data related to suicides and attempted suicides on VA property.