This document is a Mission Report (MISREP), a standardized reporting form the U.S. Military uses to record the circumstances surrounding its operations. U.S. military services often use MISREPs to report Unidentified Anomalous Phenomena (UAP) to AARO. The GENTEXT, or “general text” section of these reports often contains important qualitative, contextual information, distinguishing it from the more quantitative, or numerical, data found elsewhere in the report. A U.S. military operator reported observing one UAP, estimating its speed as “approximately 434 knots (499 mph)”. The observer described the UAP as diamond-shaped, with a non-maneuvering probe at the bottom. The observer noted that the UAP was only visible when viewed via an onboard Short-Wave Infrared (SWIR) sensor. The observer reported that the event occurred over a duration of approximately two minutes. All descriptive and estimative language contained in this report reflects the reporter’s subjective interpretation at the time of the event. Such characterizations should not be interpreted as a conclusive indication of the presence or absence of any intrinsic object features or performance characteristics.