 The Norwegian Army raised its alert levels in response.Within a couple of days the mobilized forces in the Leningrad region reached 11,000 soldiers, 4,000 naval infantry, 210 tanks, 500 troop transports, 265 self-propelled cannons, 1,300 logistics transports, 50 helicopters and 20 Antonov An-12 transport aircraft, all of which were staged in the Petchenga-Murmansk area near Norway.On the evening of 7 June, the Norwegian Garnisonen i Sør-Varanger garrison heard the noise of powerful engines coming from the manoeuvres along the entire Soviet front of the Norwegian-Soviet border.