 A more urgent need to field an aircraft capable of high altitude signals intelligence arose in 1962 when a SIGINT operation conducted by United States Navy against the Soviet Union from Peshawar, Pakistan, ended abruptly because the Pakistani government evicted the Navy for committing too many violations of restricted airspace.Two B-57Bs dubbed "Pee Wee 1" and "Pee Wee 2" were quickly modified by "Big Safari" with antennas and a modular telemetry receiver suite packaged in a pressurized canister and sent to Pakistan in January 1963 as an interim measure under an operation named "Little Cloud" to continue the mission.In the meantime "Big Safari" authorized the "Pee Wee III" project to develop the new high-altitude platform from existing B-57s.