>> thanks for joining us tonight. never miss tonight, several developing stories as we come on the air. president trump doubling down. this time in public, now calling on china to investigate his political opponent joe biden and his son. it all comes amid the escalating impeachment investigation looking into the president asking for the same thing in that phone call with ukraine's new president. and the text messages revealed here tonight. one diplomat saying it's crazy to withhold security assistance for help with a political campaign. the new images just in tonight. a u.s. military drill gone wrong. 87 paratroopers jumping at night. but then missing their landing spot. nearly two dozen badly injured. several rushed to the hospital. some dangling in trees, one for 12 hours. also breaking at this hour, the hard landing and then the sheriff's department flying overhead, then that helicopter going down, too. you could see the pilots, one appearing to try to help the other.