By Rachel MorrisonOn Friday, around 100 students gathered outside Mod 37a to watch Jenn Arens, A&S '07, shave her head to benefit the next service trip to the Gulf Coast. Arens, who had traveled to New Orleans, La., last summer as a participant in an Appalachia trip, pledged to shave her head if $500 was raised for this year's trip to the Gulf Coast.