Federal Government Response to the Pullman Strike

In the late 19th century, the labor movement in the United States sought to address various injustices faced by workers, including long hours, low wages, and unsafe working conditions. One of the most notable strikes during this period was the Pullman Strike of 1894. This nationwide railroad strike was significant not only for its scale but also for the federal response it elicited. Which of the following actions did the federal government take during the Pullman Strike?