Fuel, communications, and power connection systems

A fuel delivery system configured to supply fuel to a plurality of gas turbine engines connected to a plurality of pumps of a hydraulic fracturing system, the fuel delivery system comprising:

• a plurality of fuel line connection assemblies comprising:
• a manifold line defining an inlet end, an outlet end, and a flow path for fuel extending between the inlet end and the outlet end;
• an inlet coupling proximate the inlet end and configured to be connected to a fuel line providing flow communication with the fuel source;
• an outlet coupling proximate the outlet end and configured to be connected to one of an inlet end of another manifold line or a blocking device configured to prevent flow from the outlet end of the manifold line;
• a distribution line connected to the manifold line and configured to provide flow communication between the manifold line and the first gas turbine engine;
• and
• a valve in one of the manifold line or the distribution line and configured to change between an open condition through which fluid flows and a closed condition preventing fluid flow, the valve further configured to one of facilitate flow communication or prevent flow communication between the fuel source and the first gas turbine engine,
• wherein:
• a first fuel line connection assembly of the plurality of fuel line connection assemblies is in flow communication with a first outlet coupling of the fuel source via an inlet coupling of the first fuel line connection assembly;
• and
• a second fuel line connection assembly of the plurality of fuel line connection assemblies is in flow communication with one of an outlet coupling of the first fuel line connection assembly or a second outlet coupling of the fuel source via an inlet coupling of the second fuel line connection assembly.