diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 00000000..6252cb04
Binary files /dev/null and b/.DS_Store differ
diff --git a/modules/.DS_Store b/modules/.DS_Store
new file mode 100644
index 00000000..1f2a1991
Binary files /dev/null and b/modules/.DS_Store differ
diff --git a/modules/common b/modules/common
index c7ab98a7..a256a497 160000
--- a/modules/common
+++ b/modules/common
@@ -1 +1 @@
-Subproject commit c7ab98a75be0f78c2c17084d30c7fce5708897ff
+Subproject commit a256a49778d1154e03683c3b5e2fe6cb215d00e7
diff --git a/modules/detect_target/detect_target_factory.py b/modules/detect_target/detect_target_factory.py
index ed292db3..c52f4618 100644
--- a/modules/detect_target/detect_target_factory.py
+++ b/modules/detect_target/detect_target_factory.py
@@ -29,7 +29,10 @@ def create_detect_target(
     save_name: str,
 ) -> tuple[bool, base_detect_target.BaseDetectTarget | None]:
     """
-    Construct detect target class at runtime.
+    Factory function to create a detection target object.
+
+    Return:
+    Success, detect target object.
     """
     match detect_target_option:
         case DetectTargetOption.ML_ULTRALYTICS:
diff --git a/modules/detect_target/detect_target_ultralytics.py b/modules/detect_target/detect_target_ultralytics.py
index 4f9bddc1..61b85dce 100644
--- a/modules/detect_target/detect_target_ultralytics.py
+++ b/modules/detect_target/detect_target_ultralytics.py
@@ -5,6 +5,7 @@
 import time
 
 import cv2
+import torch
 import ultralytics
 
 from . import base_detect_target
@@ -37,7 +38,7 @@ def __init__(
         self.__device = device
         self.__model = ultralytics.YOLO(model_path)
         self.__counter = 0
-        self.__enable_half_precision = not self.__device == "cpu"
+        self.__enable_half_precision = self.__device != "cpu"
         self.__local_logger = local_logger
         self.__show_annotations = show_annotations
         if override_full:
@@ -46,6 +47,10 @@ def __init__(
         if save_name != "":
             self.__filename_prefix = save_name + "_" + str(int(time.time())) + "_"
 
+        if self.__device != "cpu" and not torch.cuda.is_available():
+            self.__local_logger.warning("CUDA not available. Falling back to CPU.")
+            self.__device = "cpu"
+
     def run(
         self, data: image_and_time.ImageAndTime
     ) -> "tuple[bool, detections_and_time.DetectionsAndTime | None]":
@@ -111,6 +116,11 @@ def run(
             self.__counter += 1
 
         if self.__show_annotations:
-            cv2.imshow("Annotated", image_annotated)  # type: ignore
+            if image_annotated is not None:
+                # Display the annotated image in a named window
+                cv2.imshow("Annotated", image_annotated)
+                cv2.waitKey(1)  # Short delay to process GUI events
+            else:
+                self.__local_logger.warning("Annotated image is invalid.")
 
         return True, detections