Invisible ink clue in NATO Phonetic Alphabet

India November Victor India Sierra India Bravo Lima Echo India November Kilo Charlie Lima Uniform Echo

Letter Breakdown

LetterNATO Word
IIndia
NNovember
VVictor
IIndia
SSierra
IIndia
BBravo
LLima
EEcho
IIndia
NNovember
KKilo
CCharlie
LLima
UUniform
EEcho

Full NATO Phonetic Alphabet

A
Alpha
B
Bravo
C
Charlie
D
Delta
E
Echo
F
Foxtrot
G
Golf
H
Hotel
I
India
J
Juliet
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
X-ray
Y
Yankee
Z
Zulu