Crim, Brady
Single witness' testimony sufficient evidence for conviction for use of a firearm.
Jury instruction holding that deft could know of weapon either before or during the crime (proper: before) held harmless error.
Brady error in withholding of police misconduct file not material, as the officer in question provided merely forensic evidence.
http://media.ca7.uscourts.gov/cgi-bin/rssExec.pl?Submit=Display&Path=Y2016/D01-19/C:14-3276:J:Kanne:aut:T:fnOp:N:1688989:S:0
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.