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Moments or a Campaign Rally in atlanta tonight. He is hoping to build on momentum from his state of the e union speech on thursday. Former President Trump also on the stump in the Battleground State as Presumptive Republican nominee. It is the second time in nine days the two are in the same state from the same day. We are watching this but first we begin with an investigation into a deadly Helicopter Crash near the southern border. What happened and the Rio Grande Valley of texas. One Border Patrol agent and two National Guard members were killed. One soldier survived but is in Critical Condi...

Mechanical problem? and we cannot rule any of that out. the ntsb will hasten to add that. there's been a tremendous amount of effort today spent on -- really on the ground. the effort has been trying to look at exactly what might be happening with the train cars. might there be any victims under the train cars in addition to that, trying to isolate and find all of those individuals who may have walked away from this crash scene uninjured, but then maybe went home they decided there was no sense in going to the hospital. the big emphasis has been trying to make sure they had every passenger on ...

Are there possible mechanical reasons a train would be going at that speed into a curve, independent of operator error? >> we want to look at that. we want to look at the operator the mechanical condition of the train. we want to look at the signal. we want to take a holistic approach to understand why this train ended up in the situation that it did. when you look at the crash site as i did in a helicopter today, the physics are pretty apparent. you guys don't have a lot of mystery in terms of what happened. how did it get to that speed? >> yes. >> let me ask you a legal question. my understa...

And i look up what i see are two huge wire poles leaning in over the train, and i'm thinking. could these collapse? as i'm looking at that scene, i realize that it looks like the train has been pulled apart, i don't know if it was. >> did you go to the hospital? >> yeah i did, badly bruised but okay. >> janelle richards thanks for sharing your experience and please take care of yourself. >> nbc news has confirmed the name and a photo of the engineer of that train. i believe we have it up now, his name is brian bossian. he was manning a train that was, as we know from the ntsb traveling very fa...

Crash and later released from the hospital. the ntsb has not yet interviewed the engineer. we now have some idea what happened, we still don't know why. joining me now, nbc news correspondent tom costello. tom, the engineer has been identified, what do we know about him? >> 32 years old, he's been an engineer for five years with amtrak, and we would expect that if this investigation is going down two different tracks he is -- he could potentially be facing serious questions from the ntsb but also potentially from police. so these are very serious -- this is a very serious set of circumstances ...