DHS spent $172M on two Gulfstream G700 jets for leaders. Kristi Noem, DHS leader, faces scrutiny over jet costs. Coast Guard requested $50M Gulfstream V earlier this year. Jets seat 13 with plasma-ionized air for quiet cabins. Lawmakers demand clarity on funding and delivery timelines. Bennie Thompson calls for congressional probe into jets. Funding source for jets remains unclear. Noem faces scrutiny over $68K mansion upgrades and $150K travel