When "Brasstacks" was executed, Pakistan quickly responded with maneuvers of its own forces, first mobilizing the entire V Corps and then the Southern Air Command, near the Indian state of Punjab. Within weeks, the Pakistan Navy's combat ships and submarines were deployed for the purpose of intelligence management, in the northern Arabian Sea. The Government of Pakistan viewed this military exercise as a "direct threat" to Pakistan's physical existence. This included further orders to deploy the entire Armoured Corps, with the V Corps, to move to the front lines. By mid-January 1987, the Pakistani Armed Forces and Indian Army personnel stood within firing range along an extended border area. The Foreign Office of Pakistan of summoned the Indian Ambassador to Pakistan, S. K. Singh, at midnight, to meet with Minister of State for Foreign Affairs, Zain Noorani, who had just returned from an emergency meeting with Pakistan's President Zia-ul-Haq. Noorani advised the Indian Embassy that he had an important message from President Zia. Noorani officially advised Singh that in the event of violation of Pakistan's sovereignty and territorial integrity by India, Pakistan was "capable of inflicting unacceptable damage on it." When Singh asked Noorani whether this implied an attack on Bombay, Noorani replied: "it might be so".