local tbSentries = {"monster_sentry","monster_sentry_decay","monster_miniturret","monster_miniturret_ceiling"}
hook.Add("PlayerSpawnedNPC","sentryrel",function(pl,npc)
    local class = npc:GetClass()
    if(table.HasValue(tbSentries,class)) then
        for _, pl in ipairs(player.GetAll()) do
            npc:AddEntityRelationship(pl,D_LI,100)
        end
    end
end)

hook.Add("PlayerInitialSpawn","sentryrelplspawn",function(pl)
    for _, class in ipairs(tbSentries) do
        for _, ent in ipairs(ents.FindByClass(class)) do
            ent:AddEntityRelationship(pl,D_LI,100)
        end
    end
end)