Congress has approved an Army request to immediately launch a project to provide 3-D printers to small units to experiment with manufacturing spare parts for -- and even building from scratch -- rucksack-portable, uncrewed aircraft systems, allowing on-demand repair and customization. Lawmakers last week approved an Army proposal to reprogram funds for the project that sought $16.2 million for the Small Unmanned Aircraft Systems program, a sum that would raise fiscal year 2024 allocation for the budget line from $30.7...