Perhaps the Euros won't ever believe the US is the first to prove water exists on Mars, unless we send a manned mission there and take an "au naturel" shower with Martian water!
Talk about a pissing contest...hmmm, pissing on Mars?
Let's see, a frozen stream of urine, expelled with 2.5 m/sec velocity, at 44.9 inclination...what's the G-constant now on Mars?...yeah, I think our guys could win that too! --Slip