Tawang/Guwahati: The Centre has asked Arunachal Pradesh governor General (retd) JJ Singh to coordinate all the major border development initiatives to build high-tech infrastructure along the Sino-Indian border. The initiatives include building an airport at Tawang, after one is in place in state capital Itanagar, and constructing a 1,840-km state-of-the-art trans-Arunachal highway touching the borders with China, Bhutan and Myanmar besides spreading a rail network in the state on the lines of one the Chinese have built in Tibet.