Players in Battlefield 4 can drop a variety of persistent items: mines, medic bags, ammo boxes, recon spawn points, etc. How long do those items persist in the world? Do they last beyond player death?
From casual observation it seems items persist as last as long as the item isn't destroyed by weapon damage and as long as the player doesn't change loadout. Ie: I can drop an engineer AT mine, get killed, and the mine will still be in the world as long as I keep spawning as an engineer with AT mines. (This behavior is the only way a Recon respawn beacon could be useful!) But I'm not confident it works that way consistently with all persistent items, particularly medic bags, the recon T-UGS, etc.