UFOs are swarming Earth's skies and demonstrating capabilities so astonishing that they must represent technologies that are advanced beyond any available on Earth. Claims of mysterious trespassers in American airspace are taken very seriously by the U.S. government for reasons of national security. That's why, at Congress's behest, the U.S. Department of Defense established its All-Domain Anomaly Resolution Office (AARO) in July 2022. This office investigates reports of UFOs under the more generic rebranding of unidentified anomalous phenomena (UAPs). AARO's work, however, isn't really about chasing down extraterrestrial invaders so much as it involves standardizing reporting methods, curating and analyzing datasets and assessing possible threats posed by UAPs. AARO has reportedly deployed the Gremlin System"a multisensor networked system for detecting, tracking and characterizing UAPs"in an undisclosed location. What is the status of this project? "Gremlin is envisioned to be a test bed for sensor evaluations and sensor fusion," [said AARO director Jon Kosloski]. "We expect it to be a "living" system, always evolving. We will be swapping in and out new sensors and algorithms for various approaches. We want to document what we learn and share that with the public and other organizations inside the government. The hope is they can take what we have learned and replicate that."