NATO devised version of the english alphabet.
a - alpha
b - bravo
c - charlie
d - delta
e - echo
f - foxtrot
g - golf
h - hotel
i - india
j - juliett
k - kilo
l - lima
m - mike
n - november
o - oscar
p - papa
q - quebec
r - romeo
s - sierra
t - tango
u - uniform
v - victor
w - whiskey
x - xray
y - yankee
z - zulu

An alphabet used by NATO in order to clearly speak over a radio. Used for call signs, tail numbers on planes, abbreviations, and anything which would require letters be spoken over the radio