The Senate version of the fiscal year 2025 defense policy bill directs the Navy to invest in developing "dual-modality" autonomous systems, authorizing an $18 million addition to the service's research and development budget to experiment with up to seven uncrewed vehicles. Designed to operate both underwater and on the ocean’s surface, dual-modality vehicles could be useful for intelligence, surveillance and reconnaissance missions, according to the bill’s committee report , which suggests the technology may be understudied and underdeveloped due to...