Apple’s latest product salvo, the iPad3, is due to hit U.S. stores any day now, if the online rumors are to be believed. The often secretive tech giant hasn’t announced a release date, but airfreight activity in China, where the product is being assembled, suggests the new tablet launch is near. Taking aside Apple’s supply chain task of distributing to eager global markets, the launch of such an anticipated product can have knock-on effects for other shippers. ...