Log Category of Documents:
Circular 13/TB, dated 29 Aug 70, signed by Nam Binh for Section 215/3245/A ((possibly aka)) the People's Security Section, VC Ba Ria Long Khanh Province ((possibly Party Committee, VC Region 7)), forwarded to the provincial Military Affairs Committee, civilian Party agencies, districts and cities, Doan 30 ((possibly 30th Transportation Battalion)), and action units of ((Section)) 215/3245/A, announces that the enemy ((PWMAF/RVNAF)) used a device called "Machine-Y99", aka "Mechanical ((Watch)) Dog" to discover friendly base complexes and bivouacking areas.