Leading US and international defence analysts are sweating bullets pondering the consequences of US strategic adversaries Russia and China getting their hands on components from the lost Japanese F-35 fighter.
Tyler Rogoway, a military aviation expert at The War Zone, speculated that the F-35 search may prove to be "one of the biggest underwater espionage and counter-espionage ops since the Cold War," given that the crash was the first opportunity for America's opponents to get their hands on a piece of the product of the US' $1.5 trillion warplane programme.
Tom Moore, military commentator and former staff member at the US Senate Foreign Relations Committee, echoed Rogoway's sentiment, warning that "there is no price too high in this world for China and Russia to pay to get Japan's missing F-35, if they can."
The expert noted that while Russia and China might have a hard time trying to reverse engineer the plane, "there are still lots of interesting parts that could be studied to get some interesting details: a particular onboard sensor or something that can't be seen from the outside but could be gathered by putting your hands on chunks of the aircraft intakes or exhaust section, on the radar reflectors, etc."
Justin Bronk, a military aviation expert at the Royal United Services Institute, a London-based security think tank, agreed.
"The usefulness for Russia or China of recovering some or all of the wreckage would depend on how much damage the aircraft sustained upon hitting the water. The general shape of the jet is well-known, as are its performance characteristics, so not much to gain there, but parts of radar and other sensors would be prime targets for recovery and testing, [and] even attempts at reverse engineering," Bronk said, speaking to Business Insider.
Others were more sceptical. Patrick W. Watson, a geopolitics and economic analyst at Mauldin Economics, tweeted that it was "only a matter of time" before an F-35 fell into Chinese or Russian hands. "Maybe would have been better not to bet so much on one system. Though, not nearly so profitable," he bitterly wrote.
Rogoway challenged Panda's scepticism.
Other users joined in to add their two cents, with some commentators more serious than others.