Hello, mercenary. Are you interested in a job, by any chance? Very well. Work is not hard for a gritty man like you, and won't end up in losing. I can always provide food and drinks, and, most importantly - skilled medical care, in cases of almost any complexity. And for my loyal clients, who do not mind helping me with my business, I offer preferential terms for goods and services. But it's up to you for the future. If you prove that you're reliable. In the meantime, here's a simple task - I need to obtain 5 emergency medical care kits. Go around as Salewa, the red ones. Know these? That's what I need.
In the south-eastern part of the storage area, there is a car trunk that spawns medical items. The storage room on the opposite side contains a Medbag.
The ambulance in front of the gas station can spawn medical items (and the Key to EMERCOM medical unit as a bonus).
Interchange
Mantis has several containers and loose spawns (shelves, tables and beds) that can spawn Salewas. Keep in mind that Mantis is one of the hottest areas on the whole map.
Emercom contains several spawns, but requires the Key to EMERCOM medical unit to unlock.
The upstairs pharmacy on the opposite side of Techlight as well as the locked storage room (requires power + ULTRA medical storage key). Same as Mantis: Danger zone!
There are four ambulances along the western side of the map, which can spawn Salewas in the back.
Reserve
The White Bishop building contains a medical room on the ground floor towards the train tracks.
The second floor of the Black Pawn building has a medical section with a Medbag and loose spawns.
The forklift near the helicopter in the courtyard has loaded a Medical Supply Crate.
Shoreline
The health resort, while being a high traffic area, contains a large amount of Medbags and Medcases.
There are two ambulances near the tunnel exfil and one directly outside of the resort.
The scav/treasure island (near tunnel exfil, past a beached barge) has a wooden shed that contains two Medbags.
Trivia
The Salewa FIRST AID KIT can have any amount of HP remaining and still be turned in
The Salewa FIRST AID KIT can be purchased at Therapist LL2 after completing her task Postman Pat - Part 2