The Wheeler National Wildlife Refuge is a 35,000 acre (142 km2) National Wildlife Refuge located along the Tennessee River near Decatur, Alabama. Named after Major General Joseph Wheeler, it was established to provide a habitat for wintering and migrating birds in the eastern United States. Of the 35,000 acres (142 km2) of the refuge, about 4,085 acres (16.5 km2) are located within Redstone Arsenal. Approximately 1,500 acres (6 km2) of the Redstone Arsenal land is administered by the Marshall Space Flight Center. The facility has a sixteen-person staff with a $1,694,000 annual budget.