MINNEAPOLIS (WCCO) — These are the four stories you need to know about from Thursday, June 16. They include fines against the companies building the new Vikings stadium, and President Obama’s forthcoming trip to Orlando.

Obama, Biden Head To Orlando

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President Obama and Vice President Joe Biden will travel to Florida Thursday afternoon. They’ll meet with survivors and pay their respects to the families of those killed in the Pulse Nightclub shooting in Orlando. Meanwhile, the FBI is trying to determine what role, if any, the shooter’s wife played in the massacre. Sources tell CBS News there is video of her buying ammunition with her husband.

Fines For Stadium Construction Companies

The death of a man working on the new Vikings Stadium has led to big fines against two of the companies building it. Mortenson Construction and Berwald Roofing are facing a combined total of nearly $175,000 for safety violations. The fines were handed down Wednesday after an investigation by the Department of Labor’s Occupational Safety and Health Administration. They are related to an accident last August that left 35-year-old Jeramie Gruber dead and another injured. Online OSHA records show both Mortenson Construction and Berwald Roofing are contesting the fines.

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Sanders To Update On His Campaign

Bernie Sanders will address his millions of supporters Thursday night in an online video to talk about what’s next for his campaign. Sanders has said he plans to continue through the Democratic convention in July. The address will start at 7:30 p.m.

Einstein Was Right

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Astronomers say they’ve heard the echoes of two more crashing black holes. It’s a discovery hinting that the unseen violence of the universe may be pretty common. A century ago, Einstein predicted that would happen in his theory of general relativity. Scientists say these events are the most powerful they’ve detected since the Big Bang.