[1] Message Confirmation Frame - bei Fax-Übertragung

[2] Military Computer Family (->"IEEE Standard Dictionary")

[3] Monolithic Crystal Filter (->"IEEE Standard Dictionary")

[4] Mission Control Facility (->"NASA Acronym List")

[5] Maintenance & Checkout Facility (->"NASA Acronym List")

[6] Tampa-MacDill AFB, FL, USA -internationale Fughafen-Kennung