A top U.S. official is concerned that many of the unexplained encounters between military aircraft and unidentified flying objects his office is investigating could be adversaries such as China spying on the country, rather than wayward extraterrestrials.The director of the All-domain Anomaly Resolution Office updated the Senate Armed Services Subcommittee on Emerging Threats and Capabilities on Wednesday about what his office has been doing since its creation last year.“This is a hunt mission for what might somebody be doing in our backyard that we don’t know about,” AARO Director Sean M. Kirkpatrick said. “That is what we are doing.”The special...