| Country | United States |
| State or Province | Maryland |
| City | Baltimore |
| Date | 10/17/76 |
| Time | Early evening |
| Weather | Clear |
| Duration | 10 minutes |
| Witnesses (Number) | 0 |
| Distance | 500 to 1000 ft |
| Solid Object | Yes |
| Size | Approximately 60 ft long |
| Shape | Triangular |
| Shape Details | Not Specified |
| Metallic/Shiny | No |
| Color | Black |
| Glow/Halo | No |
| Lights | Yes |
| How Many Lights | 3 |
| How Bright | About the same as an airplane |
| Light Coloration | White |
| Sound | No |
| Motion/Speed | No movement |
| Number of Objects | One |
| Coordination/Communication | Not Specified |
| Windows | No |
| Occupants | No |
| Description | A 14-year-old witness saw a black triangular-shaped craft hovering silently between 500 and 1000 ft above them near Frog Mortar Creek. The object had three white lights, and the witness initially thought it was a Harrier jump jet but later realized the craft made no sound. |
| Nearby Landmarks | Not Specified |
| Latitude | 39.3206 |
| Longitude | -76.3997 |
| Altitude | Not Specified |
| Propulsion | No |
| Advanced Capabilities | No |
| Visible Payload | No |
| Radar | No |
| Signatures | No |
| Awareness | No |
| Aggression | No |
| Health Effects | No |
| Physical/Environmental Effects | None |
| Animal Disturbance | None |
| Witness Feelings | Later wondered why they assumed it was a known aircraft despite no sound |
| Witness Assessment | Not Specified |
| Additional Info | Never reported to any agency, did not mention it to anyone at the time |
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