The provided search results do not contain specific information about an organization named "Painting with Purpose X No Hero Left Behind." There are several organizations with similar names, such as "Painting with a Purpose" which supports artists within the Painting with a Twist franchise, and "No Hero Left Behind Project" which is an initiative of the Beacon of Light Institute for Veterans providing support services to veterans and first responders. There is also a "Leave No One Behind Mural Project" focused on immigration advocacy and a "No One Left Behind" campaign by Help for Heroes supporting injured veterans. Additionally, a "Paint with Purpose" initiative in Renton, WA, aims to reduce graffiti through art. The location of Greensburg, PA, is mentioned in relation to a "Hometown Hero Banner project" honoring local veterans and first responders, but no direct connection to "Painting with Purpose X No Hero Left Behind" is found.
