You're assuming that they would get an answer if they asked those questions. I highly doubt that.
It’s quite routine for journalists to ask questions, receive no answer or receive a refusal to answer, and note that the exchange occurred.
On this topic, one finds big long articles with fun, colorful cartoons but not a single use of the word “detect”.
That's potentially worse, as it basically would mean the US is using the same techniques on god knows who else. The entire thing could have been friendly fire in that case.