diff --git a/flight_modes/flight_mode.py b/flight_modes/flight_mode.py
index 2c8bce22..5ecb124f 100644
--- a/flight_modes/flight_mode.py
+++ b/flight_modes/flight_mode.py
@@ -443,6 +443,7 @@ def update_state(self) -> int:
             return self._main.FMQueue.get()
 
         if self._main.sim_input is None:
+            # if too much time has passed since the last opnav run, set time_for_opnav to true
             time_for_opnav: bool = (
                 time() - self._main.last_opnav_run
             ) // 60 > params.OPNAV_INTERVAL
diff --git a/telemetry/telemetry.py b/telemetry/telemetry.py
index 105fa3ea..5a73432e 100644
--- a/telemetry/telemetry.py
+++ b/telemetry/telemetry.py
@@ -192,7 +192,7 @@ class OpNavSensor(SynchronousSensor):
     def __init__(self, main):
         super().__init__(main)
         self.quat = tuple() * 4
-        self.pos = tuple() * 3
+        self.pos = tuple() * 3  # position?
         self.acq_time = float()
 
     def poll(self):
@@ -372,7 +372,7 @@ def detailed_packet_dict(self) -> Dict[dk, Union[int, float]]:
             dk.HK_TEMP_4: self.gom.hk.temp[3],
             dk.GOM_PPT_MODE: self.gom.hk.pptmode,
             dk.RESERVED2: self.gom.hk.reserved2,
-            dk.RTC_TIME: self.rtc.rtc_time,
+            dk.RTC_TIME: self.rtc.rtc_time,  # real time clock
             dk.RPI_CPU: self.rpi.cpu,
             dk.RPI_RAM: self.rpi.ram,
             dk.RPI_DSK: self.rpi.disk,