David Grusch testified on an alleged covert government program to recover and reverse engineer crashed alien spacecraft. MORE: https://abc7.com/ufo-hearing-uap-david-grusch-whistleblower-claims/13551080/ Summarize this content to 100 words [matched_content] source UFO hearing features former official claiming US found alien crafts 155546 , 2023-07-27 00:00:11 , 00:02:03 UCVxBA3Cbu3pm8w8gEIoMEog 1054 [vid_tags]
