@techreport{TechReport_2026_LANL_LA-UR-26-27282_Rising, address = {Los Alamos, NM, USA}, author = {Rising, Michael Evan}, institution = {Los Alamos National Laboratory}, month = {August}, number = {LA-UR-26-27282}, title = {{MCNP6 Developments: A 2025-2026 Year in Review}}, type = {Presentation}, year = {2026} }