Have a great Valentine's Day. A couple of Surya Kirans, part of Indian Air Force's nine-member aerobatic team, make the sign above Chennai's skies. Hope you can see them at the base of the heart. A third acts out the role of Cupid's arrow. February 14, according to information on the Internet, among other things, marks the official start of the mating season for birds. So I've included more high fliers below.