At 3 a.m. on July 27, an Eastern Airlines flight over Washington was told that an unknown object was in its vicinity; the crew could see nothing unusual.
7月27日凌晨3:00，美国东方航空一趟飞过华盛顿上空的航班被告知一个不明物体正在航班附近，但机组人员没有看到任何异常物体。