Curious if anyone knows what knob he's talking about. https://xcancel.com/RepPatHarrigan/status/2055318212041171384 >For 20 years, a knob that takes one hour and $6 to 3D print has been grounding Black Hawk helicopters four times a month, and the contractor responsible won't sell us the part or the IP rights to fix it ourselves. > So instead, American taxpayers have been paying $40,000 every single time to replace the entire system, multiplied by four times a month, for two decades.