Telephone
Numbers in the military phone networks of the US Armed Forces:
1960s: Worms Military (218) 8941 oder 8177
1970s: Military 2421-8234
1980s: Military 2421-7570, 7806, 8234, 7234
1980s: ETS 383-7570, 7806, 8234, 7234
1990s: DSN 383-7601, 7806, 7808, 7809