Read the excerpt from "Code Talkers.” In World War I and World War II, American Indian soldiers played a critical role in the US military effort by using their native languages as the basis for creating successful codes. The most famous of these soldiers were a group of four hundred men known as the Navajo code talkers. These innovative and courageous soldiers developed for the United States Marine Corps a virtually unbreakable military code, which proved highly valuable against the Japanese during the Second World War. Which words and phrases from this excerpt help create a tone of admiration? Choose three correct answers.