at any point richard engel inside ukraine tonight. our exclusive after our reporting on young people dying after obtaining deadly pills through snapchat the platform s head of safety on how snapchat is cracking down. and the big honor for an nhl trailblazer. announcer: this is nbc nightly news with lester holt. good evening it appears tonight the cell phone companies have blinked in their showdown with the airlines verizon and at&t now say they will voluntarily delay rolling out their new faster 5g cell service around runways at some airports tomorrow amid a debate over whether 5g signals could interfere with critical cockpit technology that pilots rely on to land planes in low clouds and fog. 5g service will, however, still roll out elsewhere overnight. the cell giants insisting 5g is not a threat to aviation, but the faa and the nation s airlines aren t convinced. they have warned of massive flight disruptions if pilots are unable to fly at certain landing approaches becaus