Although research has made significant advances in identifying treatments for fear-related disorders, these treatments are not entirely effective and relief from symptoms is often short-lived (Craske, 1999; McNally, 2007; Rachman, 1989). The research on which these treatments are based has largely focused on investigating processes by which fears are learned with an eye toward enhancing fear extinction. Less work, however, has examined safety stimuli (which denote the absence of threat) and whether specific types of safety stimuli have beneficial effects on fear extinction. One prevailing view is that safety signals are detrimental to the fear extinction process (Craske et al., 2008; Hermans, Craske, Mineka, & Lovibond, 2006), even though only a handful of studies using simplistic safety signals have tested these effects in humans (Lovibond, Davis, & O'Flaherty, 2000). Although there has been some discussion of the potential benefits of safety behaviors during exposure therapy (Rachman, Radomsky, & Shafran, 2008), protocols for the treatment of fear-related disorders generally warn against the presence of safety signals during therapy, including social-support figures even though their safety role had not been formally tested. However, recent findings suggest that this thinking may be misguided (Hornstein, Fanselow, & Eisenberger, 2016). Here, we examined whether one unique type of safety signal-social-support stimuli-can actually enhance fear extinction and whether these effects remain over time. The most common and effective method of treatment for maladaptive fears is exposure therapy, a procedure based on fear extinction processes. Yet fear extinction procedures in general, and exposure therapies in particular, are not always successful; fear reduction is often only temporary (