Supergirl

This is the from the series where Kara forst meet me (the flash) I was belong to earth 2 and she's from earth 38 I was testing my speed using the Tachyon device and runs faster at the speed of light and got more faster and end up to the earth 38 where Kara belongs andnsaw her falling down out of the building I go to tgat buikding and save her and runs faster a the open area and puts her down