  This paper extends work by Tracy and Widom on blocks in the asymmetric simple
exclusion process (ASEP) to the case of step-Bernoulli initial condition. We
consider the probability that a particle at site $x$ is the beginning of a
block of $L$ consecutive particles at time $t$ in ASEP with step-Bernoulli
initial condition. A Fredholm determinant representation for this probability
is derived, and the asymptotics are computed for the KPZ regime.
