← ENCOUNTERS DIRECTORYENCOUNTER-CLAIM PROVENANCE PRESENT
E-006321LANDMARK CASE · HIGH CORROBORATIONDATE PRECISION: exactRECORD COMPLETENESS: 100%
Fort Devens Eight Orange Objects
September 17, 1957Fort Devens, Massachusetts, United States
A military report quoted in a First Air Force letter described eight small round orange objects over Fort Devens during 20:15-20:55 local time, moving in several directions at varied altitudes without reported sound or vapor trail.
// LINKED CLASSIFICATIONS:Scientific & Observational Types(P-000101)→Official Investigations & Programs(P-000105)→
// PROVENANCE COVERAGE
100% record completeness
This measures documentation coverage, not whether the encounter or its claims are true.
1 SOURCES · 0 PRIMARY
Date documented
September 17, 1957
Location documented
Fort Devens, Massachusetts, United States
Map coordinates available
Coordinate precision: city.
Catalogue classification linked
2 family link(s), 1 case-specific component(s).
Published citation-backed claims
2 encounter-target claim(s), 2 component claim(s).
Source coverage
1 unique source edition(s); 0 marked primary for at least one claim.
Assessment has encounter-level provenance
2 encounter-target published claim(s) can carry assessment provenance.
This dossier currently depends on a single source edition; independent coverage would strengthen comparison.
No cited source is currently marked as primary for the published claims shown here.
// ASSESSMENT METADATA
Stored case-assessment fields
Stored total witness estimate3
Stored verified-report count0
Instrumental evidence flagNO
Official investigation flagYES
// ENCOUNTER LOCATION · OPENSTREETMAP
COORDINATE PRECISION: CITY