blog posts Houston airport officials increasing perimeter patrols after two security breaches Jun 8, 2023 12:45 pm by KHOU-TVIllinois in the News Share on Facebook Tweet Email Images KHOU-TV (June 7) Professor Sheldon Jacobson explains that airport security at works in layers. 'Perimeter security breaches are not rare. Since airport security is predicated on layers, breaching perimeter fences is just one of the layers.' Share on Facebook Tweet Email