Which term represents the letter "S" in the phonetic alphabet?

The phonetic alphabet, also known as the International Radiotelephony Spelling Alphabet, assigns specific words to each letter to ensure clarity in communication, particularly in noisy environments or when dealing with language barriers. The term that corresponds to the letter "S" in this phonetic system is "Sierra."

Using "Sierra" helps prevent miscommunication, especially in contexts such as aviation, maritime operations, and emergency services, where precise communication is crucial. This term would be used to convey the letter "S" when spelling out words or clarifying messages over a radio. The use of common words to represent letters helps in minimizing confusion that might arise from similar-sounding letters.