great guide
too bad i already did my grenade quest and i did it the hard way >_< lol only after i did it did i read about the spoiler below and now your guide
but heres a way
Spoiler!!!
k do what he said ^ but if u want to once u get the easy to reach crates and barrels log off then back on it will reset all dig spots barrels and crates keep doing this till u have compleated the quest