Lagrangian trajectories in ABC flow have been studied by Dombre et al.1 for the purpose of analyzing chaos in three-dimensional Hamiltonian systems. In this paper we report on the study of finite particles (i.e., particles with inertia and dissipation) embedded in an ABC flow. Both linear and nonlinear drag models were examined. Because the dynamics must be represented in a six-dimensional phase space (rather than three dimensions for the pure Lagrangian ABC flow), and such high dimension spaces are difficult to visualize, we use a three-dimensional projection to study individual particle trajectories. Specially developed interactive graphics tools were used to facilitate the search for strange attractor regions, and computations were done on a 128 processor hypercube computer. The system is dissipative, and the expected folding appears; trajectories fold in about the unstable stagnation points in the flow. These regions of folding are outside the principal vortices, and the folding regions appear to be bounded by the KAM surfaces that would be associated with the Hamiltonian ABC flow. Strange attractors are, observed in the steady-state trajectories. As the drag becomes very small, both the linear and nonlinear models approach the limiting case of ABC flow. While this seems reasonable, the ‘‘zero drag’’ limit is singular, in the sense that the six-dimensional phase space problem would have to become a three-dimensional problem in the limit of point particles. When released in a periodic or quasiperiodic region, a particle with a linear drag force retains trajectory regularity, even if it crosses a chaotic region. This was not true for the nonlinear drag model. The introduction of particles can be thought of as a perturbation of ABC flow, and as drag increases this perturbed flow exhibits increasing breakdown of KAM-like surfaces, leading to larger chaotic regions. Future work will concentrate on the particle perturbations to the base ABC flow, and more examination of the phase space projections which may possibly give information on basins of attraction.