The Texas Military Department Open House is an annual event designed to welcome the community to Camp Mabry, in Austin, Texas and provide guests an up close look at its Texas National Guard. Through demonstrations, displays, and personal interaction the public is educated about the missions and capabilities it provides the citizens of Texas. 

Held in conjunction with the American Heroes Air Show, an admission-free all-helicopter aviation event and career fair, the open house attracts approximately 20,000 guests each year. From helicopter demonstrations, emergency and first responder displays, World War II reenactments, children's activities, and much more, this event contains something for everyone.