I am aware that CAP Regulations do not allow aircrew to use night vision goggles, but is there a regulation prohibiting use among Ground Teams?

No. CAP ground resources may use night vision devices in support of SAR/DR operations while on foot or as passengers in vehicles. Use of night vision devices by drivers during motor vehicle operations is prohibited.

Night vision devices may not be used by the pilot flying CAP aircraft. However, night vision devices may be used by scanners and observers who have completed nationally approved training in the use of this equipment. Only nationally approved night vision devices are authorized for use.