The government today said it expects the "immediate and safe return" of an Indian Air Force pilot captured by Pakistan after an air combat that marked the worst escalation between the neighbours in decades. New Delhi summoned the Pakistan envoy and lodged a strong protest over what it called an "unprovoked act of aggression by Pakistan", saying its jets had targeted military installations in India a day after Indian fighter jets crossed the Line of Control and carried out a strike at a major terror camp.