Spy vs Spy

Two shadows lurk on moonlit deck
as Halsey is reuniting the fleet,
while Sardinian tides trigger
queues of loading troops in
Mediterranean longitudes.
As the human cargo is laden
one shadow leans toward the other:

"Sir, thy art is murder if I am any judge.
Do you, like the Borgias, use potassium cyanide
or do you prefer to rely on projectile forces?
Yet again, do you, like Othello, find knives
exchanging hands better: exchanging
to their back from your hand?"

"Madam, your myopia blurs
the most significant details.
I merely deal in analgesics
such as willow bark and thyme
to relieve conjunctivitis.
You are a maladjusted jester
without appreciation for a healer's art.
I prefer a rose for Epona to protect
our horses and their riders
than to take the life of another."

They retire to the signal room
where the wireless operator
is forced to do pattern recognition
because a distant hypernova
and its resultant gamma burst
leaves only static and snow crashing
in the set while a slow double helix
spirals on the monitor.

"The admiral wants you both in the bridge."
They turn to the baby faced Ensign and nod.
Setting aside their differences, the two
most lethal agents of the free world
stroll like tourists at a county fair
into what would become the greatest
maelstrom of battle ever engineered
by unnamed faceless civilians.

[Challenge with prompts:
#1
Thy art is murder
Reuniting the fleet
A rose for Epona
Pattern Recongnition
Snow Crash
Longitude
Knives exchanging hands
#2
Conjunctivitis
Potassium Cyanide
Myopia
Projectile
Wireless
Gamma burst
#3
Sardinian tides
Willow bark and thyme
Maladjusted Jester
Hyper Nova
Double Helix
Othello
(spelling corrected)]