Thibault, D. U.; Commented APP-6A - Military Symbols for Land Based Systems, Defence R&D Canada – Valcartier, Technical Note TN 2005-222 (2005-08-01) English...
DescriptionTZ AD.svg NATO APP-6 Air Defense / Taktisches Zeichen Flugabwehr. See Image:Ground Track - Unit - Combat - Air Defence - Friendly.svg for APP-6A...