T-A

No. One was damaged by ground fire and landed at a US base.

https://www.airandspaceforces.com/f-35a-lands-after-taking-f...

You may be thinking of the F-15s shot down by Kuwaiti "friendly fire".

...and microsoftonline.com is not among them (unlike microsoftonline.net and other variants). But it seems to have been registered in 2002, and the record looks legit:

https://whois.domaintools.com/microsoftonline.com

Catch-22 [1]:

You will need to provide an arXiv article id. This is necessary for your paper to be processed correctly, the submitted version must be the same as the arXiv version.

[1] https://jcap.sissa.it/jcap/help/helpLoader.jsp?pgType=author

Lastly, we derive an exact population-risk objective from a single training run with no validation data, for any architecture, loss, or optimizer, and prove that it measures precisely the noise in the signal channel. This objective reduces in practice to an SNR preconditioner on top of Adam, adding one state vector at no extra cost; it accelerates grokking by 5x, suppresses memorization in PINNs and implicit neural representations, and improves DPO fine-tuning under noisy preferences while staying 3x closer to the reference policy. [1]

[1] https://arxiv.org/abs/2605.01172