You must have forgotten to tell that to Nick before heading out.
And a scorecard for the bets on when the core needle will bend. Might not be today but it most certainly will be when it's raining or snowing or cold or muddy, etc. Just get one of these at Walmart. Best $2.50 you can spend on tire stuff -a tool that you can use for many purposes plus 4 valve cores just in case. There's another Slime kit that comes in a little plastic case with that stuff and even more for about $8. More than a few guys just air down by carefully unscrewing the core with that tool and keeping a steady hand on it while keeping a count they've figured out to judge PSI (the same method is used by the $40 air-down tool/gauge but the design screws on to the stem to capture the core, eliminating the risk of it flying away and obviously the count isn't needed). Or, you can simply use the fitted end to depress the core instead of a key or stick, and it's much more comfortable and safe.
Buy Slime 20088 4-Way Valve Tool with 4 Valve Cores at Walmart.com
www.walmart.com
Side note from experience - the guys who are taking the longest to air down, usually with the 'press the core' method, often don't go down far enough because they're holding up the group; at some point on the trail it will be come evident that they need to stop and do it again. New guys are the most commonly affected by this. No offense intended to anyone.