The Memo is a diary entry that can be collected in Metro Exodus.
Location[]
Moscow: After you get through the courtyard, there will be a note on a desk to your left (if you entered the room through the door).
Transcript[]
To all personnel of the "Shield" project Special Guard Detail
In recent years there's been a noticeable increase in the number of attempts to breach our defenses by spies and enemy agents belonging to previously uncommon demographics - women, old people, teenagers. This serves to prove the utmost efficiency of the Special Detail's defense effort, leaving the enemies no chance of ever achieving their goals of mapping our defense perimeter and carrying out sabotage by employing standard tactics.
For that reason, all members of Special Guard Detail personnel must carry out their duties responsibly and never falter in applying the special measures to any and all enemy agents detained. Remember, the enemy is resourceful and deceitful, the enemy is desperate enough as to throw the last reserves into battle. Still, the enemy resources are still vast, and a cornered rat is only more dangerous!
Defense Council