Last Flight of the Liberators — Dave Morris

The chemical and biological terrorism we've all been fearing has finally happened on American soil, as a band of unidentified terrorists invades Texas. American military superpower is ineffective against the new weapons of mass destruction wielded by the new generation of terrorists from small airplanes circling overhead major cities. But fate throws together a young woman abducted from her beach vacation, a small group of men with home-built experimental aircraft, and an air show team from the Confederate Air Force with their vintage World War II airplanes. Together, they manage to thwart the largest terrorist threat of the dawning 21st century using a combination of high-tech equipment, low-tech trickery, and raw courage!