Lockheed was on the verge of collapsing in 1971, and only survived thanks to the Emergency Loan Guarantee Act of 1971 (which passed the Senate thanks only to Spiro Agnew's tie-breaking vote). Could this act have failed to pass? What would've happened next - bankruptcy, an executive order by Nixon, a buyout by someone, or what?
Further, could the Lockheed bribery scandals have leaked earlier? They could've plausibly torpedoed the ELGA, and might have led to Skunk Works resigning en masse - as it was, Kelly Johnson nearly quit over the scandals when they came out in 1975, even though Lockheed's top brass had resigned over the issue. Where would they go?
This also has knock-on effects elsewhere - the British engine company Rolls-Royce went into receivership on February 4, 1971 and was nationalized by PM Edward Heath; it was dependent on ELGA's guarantee of funds for Lockheed to bring the L-1011 project to completion. If Lockheed folds, and the L-1011 isn't picked up by another manufacturer, what happens to Rolls-Royce, and to Heath?