"yeah. Give me a sec, and we will see if there is anything to be worried about."
Reaching into an inside pocket in his vest, he brings out a small rolled leather pouch and produces a couple of small metal pieces, before placing himself between the others and the lock of the chest.
Rolls
Pick Lock Attempt w/ Thieves' Tools Proficiency - (1d20+9)
(13) + 9 = 22