Like any other complex project implementation, the success of NPSBN will depend on carefully balancing the triple constraints of scope, budget and schedule. This will require careful choice of available options presented herein, to ensure that the network meets the needs for which it is envisioned. To be able to sustain the network in the long term, FirstNet will need to develop a financial model that can fund the ongoing maintenance of the network in addition to initial network build-out. Emerging technologies of self optimizing networks provides the potential for NPSBN to leverage various broadband technologies to deliver a hybrid network. At the same time, the small cells technology offers the promise to deliver higher capacity in high demand areas with minimal investment.