← All EvidenceDirectDirect Examination - Edward S. Knapp Edward S. Knapp Aloke Chakravarty
Demonstratives
2-D interactive exhibit showing the blast seat and distribution of recovered materials
The two-dimensional interactive display identified as Exhibit 620 depicts the Scene A blast seat and materials radiating outward in all directions. Edward S. Knapp explained that its colors distinguish backpack material, pressure-cooker pieces, added fragmentation, and fusing-system components.
About
Knapp used the Scene A display in his analysis to explain the blast's origin and the distribution of device materials.