bwi airport is down here. so you can see a major roadway, right? they're also very important for the moving of cargo. a lot of warehouses in the like right there as well. again, the search and rescue operations continue this morning and we're going to update you as that comes in with me now more with me now is the maryland transportation secretary. paul would've field is on the phone with us right now. mr. secretary thank you so much for being with us. let me just first ask you, do you have any updates about the search and rescue operations in the water? >> paul ul we'd have felt wai ed iep >> mr. secretary, if you can hear me and thank you for being with us do you have any updates on the search and rescue operations in the water? >> it is still ongoing. we have every imaginable resource here, meaning from the federal, state, and local level and that is what they're doing right now >> anyone recovered at this point >> we have one individual that we did take to shock trauma and that is still again, there's in that mode right now. >> okay. so as we w

so you can imagine if you're coming from the northeast down to bwi, you may very well go over that bridge, this area right here, you're looking at a lot of warehouses. amazon, mccormick, important companies. so this is a huge transport corridor up and down the east coast let's get a. sense of what it would be like for people who may be in the water right now, because as you heard, there is a search for up to seven people derek van dam is with us now we heard water temperatures of about 48 degrees. what does that mean, derek? >> yeah. well, that's downright dangerous for anybody who enters water of those temperatures. cold water, remember, drains body heat roughly four times faster than cold air can. so with a water temperature of 48 degrees, the reasonable survivability time is roughly one to three hours with those types of water temperatures give or take a couple of hours on either side of that, that is what we're dealing with here. remember hypothermia, cold shock, that, or that is the concern. as you enter cold water with water temperatures in the '40s, your heart rate increases, your