L3 Technologies has acquired undersea technology manufacturer Adaptive Methods to further build a portfolio in the unmanned and anti-submarine warfare domains. Terms of the transaction completed on Sept. 8 were undisclosed. Adaptive Methods will join L3’s sensor systems segment and will be renamed L3 Adaptive Methods. This is L3’s third acquisition in the last five months of a company with a footprint in the unmanned undersea market. L3 purchased drone maker OceanServer in April and added battery and energy technology company Open Water Power in May.