. >>> i'm alex demetri.coming up, a mega investment could mean mega returns for the port of baltimore. that story as eyewitness news 4 continues. >>> a heat wave moving this way. stick around for the updated first warning forecast. ,,,,,,,,,,,,,,,, >>> it's sunny and 93 degrees in central maryland right now. the weather forecast is coming up. >>> it takes something really big to change a skyline; but that's exactly who's happening at port of baltimore. alex demetri reports four gigantic reins are about to climb higher. >> reporter: using a tug boat for a photo of, two years ago the mayor announced the port of baltimore would be growing to builds. >> going to bring 2700 permanent jobs to handle the increased container traffic that will come through the port. >> reporter: last week, the backbone of the growth barely fit underneath the bridge. four cranes on their way to a deep-water berth to handle a new generation of gigantic car go ships. they are the largest such cranes in the world. >> that put the port of