Air and sea transport power the global economy. Since the vast majority of trade is physical, it must travel by plane or ship to reach its market. In fact, high value, time-sensitive goods usually fly through at least two airports, and almost every container passes through at least two seaports. When ports are efficient, people receive the goods theyre waiting for, sellers receive payment, and global economic development is strengthened. Public-private partnerships (PPPs) push this development forward with greater speed and richer benefits. In this issue, handshake turns its attention to air and sea transport (expect a companion issue on road and rail in October 2012). In the air, we deconstruct myths surrounding airport PPPs, learn brutally honest lessons from experiences in airline privatization, and revisit the liberalization of African skies. For seaports, the authors examine private investment, glimpse the post concession era, and witness the PPP evolution.