 here with a vantage point less than 400 feet from where former President Donald Trump took the rally stage. At least four congressional committees have indicated they plan to open probes into last Saturday's rally with the first hearing slated for Monday when Secret Service Director Kimberly Cheadle testifies before the House Oversight and Accountability Committee. Cheadle said in an ABC News interview, quote, the buck stops with me when questioned on the security lapses at the rally in Butler, Pennsylvania last Saturday.