>>> replace each letter in 'ABCDEFGHIJKLMNOPQRSTUVWXY' with the corresponding NATO Phonetic alphabet code

- elapsed 1.129 seconds -
phonetic = 'Alfa Bravo Charlie Delta Echo Foxtrot Golf Hotel India Jules Kilo Lima Mike November October Peter Quebec Romeo Sierra Tango Union Victor Whisky Xray Yankee Zulu'
out = []
for letter in 'ABCDEFGHIJKLMNOPQRSTUVWXY':
    out.append(phonetic[ord(letter) - ord('A')])
print(''.join(out))