The nondispersive ‘‘dropouts’’ of energetic ions from about 20 keV nucleon1 to 2 MeV nucleon1 from impulsive solar flares, as recently observed by the Advanced Composition Explorer (ACE) spacecraft for a large number of impulsive solar events,occursofrequentlyandoversuchsmallscales(0.03AU) that they cannot be attributed to large-scale magnetic discontinuities and instead must be related to the small-scale structure of the interplanetary magnetic field (Mazur et al. 2000). Similar features have also been observed in solar electron bursts (at less than1.4keV)byACE,oftenincoincidencewiththeiondropouts (Gosling et al. 2004). The dropouts are generally attributed to filamentationofmagneticconnectionfromsmallregionsofthesolar coronatoEarthorbitasthefilamentsconvectpastthespacecraft atthesolarwindspeed,aninterpretationthatissupportedbycomputer simulations based on a random distribution of transverse fluctuations at the Sun (Giacalone et al. 2000), or anisotropic turbulence in the interplanetary medium (independently by Ruffolo et al. [2003] and by Zimbardo et al. [2004] and Pommois et al. [2005]), distinct physical descriptions that are nevertheless mathematically similar (Giacalone et al. 2006).